[go: up one dir, main page]

Search a number
-
+
245411031 = 3175981559
BaseRepresentation
bin11101010000010…
…10110011010111
3122002210011122110
432220022303113
51000311123111
640204002103
76036650025
oct1650126327
9562704573
10245411031
11116589a38
126a230333
133bac6a38
1424843715
15168295a6
hexea0acd7

245411031 has 16 divisors (see below), whose sum is σ = 352339200. Its totient is φ = 151371648.

The previous prime is 245410999. The next prime is 245411039. The reversal of 245411031 is 130114542.

It is not a de Polignac number, because 245411031 - 25 = 245410999 is a prime.

It is a super-2 number, since 2×2454110312 = 120453148272965922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 245410989 and 245411007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245411039) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37771 + ... + 43788.

It is an arithmetic number, because the mean of its divisors is an integer number (22021200).

Almost surely, 2245411031 is an apocalyptic number.

245411031 is a deficient number, since it is larger than the sum of its proper divisors (106928169).

245411031 is a wasteful number, since it uses less digits than its factorization.

245411031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81638.

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 245411031 is about 15665.6002438464. The cubic root of 245411031 is about 626.0822048374.

Adding to 245411031 its reverse (130114542), we get a palindrome (375525573).

The spelling of 245411031 in words is "two hundred forty-five million, four hundred eleven thousand, thirty-one".

Divisors: 1 3 17 51 59 177 1003 3009 81559 244677 1386503 4159509 4811981 14435943 81803677 245411031