31860157340 has 48 divisors (see below), whose sum is σ = 73001706624. Its totient is φ = 11583451200.

The previous prime is 31860157337. The next prime is 31860157361. The reversal of 31860157340 is 4375106813.

It is a junction number, because it is equal to n+sod(n) for n = 31860157294 and 31860157303.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1815287 + ... + 1832753.

It is an arithmetic number, because the mean of its divisors is an integer number (1520868888).

Almost surely, 2^31860157340 is an apocalyptic number.

It is an amenable number.

31860157340 is an abundant number, since it is smaller than the sum of its proper divisors (41141549284).

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

31860157340 is a wasteful number, since it uses less digits than its factorization.

31860157340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25778 (or 25776 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 38.

The spelling of 31860157340 in words is "thirty-one billion, eight hundred sixty million, one hundred fifty-seven thousand, three hundred forty".