31424402025 has 18 divisors (see below), whose sum is σ = 56284596030. Its totient is φ = 16759680960.

The previous prime is 31424401969. The next prime is 31424402047. The reversal of 31424402025 is 52020442413.

31424402025 is a `hidden beast` number, since 3 + 14 + 2 + 440 + 202 + 5 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 366684201 + 31057717824 = 19149^2 + 176232^2 .

It is not a de Polignac number, because 31424402025 - 2²⁶ = 31357293161 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 31424402025.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 69831780 + ... + 69832229.

Almost surely, 2^31424402025 is an apocalyptic number.

It is an amenable number.

31424402025 is a deficient number, since it is larger than the sum of its proper divisors (24860194005).

31424402025 is a wasteful number, since it uses less digits than its factorization.

31424402025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139664025 (or 139664017 counting only the distinct ones).

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

Adding to 31424402025 its reverse (52020442413), we get a palindrome (83444844438).

The spelling of 31424402025 in words is "thirty-one billion, four hundred twenty-four million, four hundred two thousand, twenty-five".