31413305025 has 18 divisors (see below), whose sum is σ = 56264720070. Its totient is φ = 16753762560.

The previous prime is 31413305023. The next prime is 31413305047. The reversal of 31413305025 is 52050331413.

It can be written as a sum of positive squares in 3 ways, for example, as 327031056 + 31086273969 = 18084^2 + 176313^2 .

It is not a de Polignac number, because 31413305025 - 2¹ = 31413305023 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 31413305025.

It is not an unprimeable number, because it can be changed into a prime (31413305023) 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 17 ways as a sum of consecutive naturals, for example, 69807120 + ... + 69807569.

Almost surely, 2^31413305025 is an apocalyptic number.

It is an amenable number.

31413305025 is a deficient number, since it is larger than the sum of its proper divisors (24851415045).

31413305025 is a wasteful number, since it uses less digits than its factorization.

31413305025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139614705 (or 139614697 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 27.

Adding to 31413305025 its reverse (52050331413), we get a palindrome (83463636438).

The spelling of 31413305025 in words is "thirty-one billion, four hundred thirteen million, three hundred five thousand, twenty-five".