31240321314040 has 32 divisors (see below), whose sum is σ = 72005130837360. Its totient is φ = 12191344902400.

The previous prime is 31240321314011. The next prime is 31240321314053. The reversal of 31240321314040 is 4041312304213.

It is a happy number.

It is a super-2 number, since 2×31240321314040² (a number of 28 digits) contains 22 as substring.

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, 9524486566 + ... + 9524489845.

Almost surely, 2^{31240321314040} is an apocalyptic number.

It is an amenable number.

31240321314040 is an abundant number, since it is smaller than the sum of its proper divisors (40764809523320).

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

31240321314040 is a wasteful number, since it uses less digits than its factorization.

31240321314040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19048976463 (or 19048976459 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 28.

Adding to 31240321314040 its reverse (4041312304213), we get a palindrome (35281633618253).

The spelling of 31240321314040 in words is "thirty-one trillion, two hundred forty billion, three hundred twenty-one million, three hundred fourteen thousand, forty".