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30201213 = 373747827
BaseRepresentation
bin111001100110…
…1010101111101
32002211101021110
41303031111331
530212414323
62555152233
7514464120
oct163152575
962741243
1030201213
1116058689
12a145679
136345753
1440223b7
1529b8793
hex1ccd57d

30201213 has 32 divisors (see below), whose sum is σ = 48328704. Its totient is φ = 16414272.

The previous prime is 30201211. The next prime is 30201217. The reversal of 30201213 is 31210203.

It is a happy number.

It is not a de Polignac number, because 30201213 - 21 = 30201211 is a prime.

It is a super-2 number, since 2×302012132 = 1824226533342738, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30201211) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 36106 + ... + 36932.

It is an arithmetic number, because the mean of its divisors is an integer number (1510272).

Almost surely, 230201213 is an apocalyptic number.

It is an amenable number.

30201213 is a deficient number, since it is larger than the sum of its proper divisors (18127491).

30201213 is a wasteful number, since it uses less digits than its factorization.

30201213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 921.

The product of its (nonzero) digits is 36, while the sum is 12.

The square root of 30201213 is about 5495.5630284803. The cubic root of 30201213 is about 311.4163872232.

Adding to 30201213 its reverse (31210203), we get a palindrome (61411416).

The spelling of 30201213 in words is "thirty million, two hundred one thousand, two hundred thirteen".

Divisors: 1 3 7 21 37 47 111 141 259 329 777 827 987 1739 2481 5217 5789 12173 17367 30599 36519 38869 91797 116607 214193 272083 642579 816249 1438153 4314459 10067071 30201213