31261542122432 has 56 divisors (see below), whose sum is σ = 68539531984416. Its totient is φ = 14071691583488.

The previous prime is 31261542122423. The next prime is 31261542122467. The reversal of 31261542122432 is 23422124516213.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 624606173 + ... + 624656220.

Almost surely, 2^{31261542122432} is an apocalyptic number.

31261542122432 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

31261542122432 is an abundant number, since it is smaller than the sum of its proper divisors (37277989861984).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31261542122432 is a wasteful number, since it uses less digits than its factorization.

31261542122432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1249262445 (or 1249262435 counting only the distinct ones).

The product of its digits is 138240, while the sum is 38.

Adding to 31261542122432 its reverse (23422124516213), we get a palindrome (54683666638645).

The spelling of 31261542122432 in words is "thirty-one trillion, two hundred sixty-one billion, five hundred forty-two million, one hundred twenty-two thousand, four hundred thirty-two".