31261536131452 has 12 divisors (see below), whose sum is σ = 59681114432856. Its totient is φ = 14209789150640.

The previous prime is 31261536131401. The next prime is 31261536131473. The reversal of 31261536131452 is 25413163516213.

It is a junction number, because it is equal to n+sod(n) for n = 31261536131399 and 31261536131408.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 355244728723 + ... + 355244728810.

It is an arithmetic number, because the mean of its divisors is an integer number (4973426202738).

Almost surely, 2^{31261536131452} is an apocalyptic number.

It is an amenable number.

31261536131452 is a deficient number, since it is larger than the sum of its proper divisors (28419578301404).

31261536131452 is a wasteful number, since it uses less digits than its factorization.

31261536131452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 710489457548 (or 710489457546 counting only the distinct ones).

The product of its digits is 388800, while the sum is 43.

Adding to 31261536131452 its reverse (25413163516213), we get a palindrome (56674699647665).

The spelling of 31261536131452 in words is "thirty-one trillion, two hundred sixty-one billion, five hundred thirty-six million, one hundred thirty-one thousand, four hundred fifty-two".