245444031 has 48 divisors (see below), whose sum is σ = 416322816. Its totient is φ = 136453248.

The previous prime is 245444029. The next prime is 245444057. The reversal of 245444031 is 130444542.

It is a happy number.

It is not a de Polignac number, because 245444031 - 2¹ = 245444029 is a prime.

It is a super-2 number, since 2×245444031² = 120485544707057922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 245443986 and 245444004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245444531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 381396 + ... + 382038.

It is an arithmetic number, because the mean of its divisors is an integer number (8673392).

Almost surely, 2^245444031 is an apocalyptic number.

245444031 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

245444031 is a deficient number, since it is larger than the sum of its proper divisors (170878785).

245444031 is a wasteful number, since it uses less digits than its factorization.

245444031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 812 (or 809 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 27.

The square root of 245444031 is about 15666.6534716256. The cubic root of 245444031 is about 626.1102663127.

Adding to 245444031 its reverse (130444542), we get a palindrome (375888573).

The spelling of 245444031 in words is "two hundred forty-five million, four hundred forty-four thousand, thirty-one".