31534352152 has 32 divisors (see below), whose sum is σ = 59535544320. Its totient is φ = 15658381600.

The previous prime is 31534352149. The next prime is 31534352153. The reversal of 31534352152 is 25125343513.

It is a super-2 number, since 2×31534352152² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31534352153) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1527483 + ... + 1547989.

It is an arithmetic number, because the mean of its divisors is an integer number (1860485760).

Almost surely, 2^31534352152 is an apocalyptic number.

It is an amenable number.

31534352152 is a deficient number, since it is larger than the sum of its proper divisors (28001192168).

31534352152 is a wasteful number, since it uses less digits than its factorization.

31534352152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21831 (or 21827 counting only the distinct ones).

The product of its digits is 54000, while the sum is 34.

Adding to 31534352152 its reverse (25125343513), we get a palindrome (56659695665).

The spelling of 31534352152 in words is "thirty-one billion, five hundred thirty-four million, three hundred fifty-two thousand, one hundred fifty-two".