31400763707 has 4 divisors (see below), whose sum is σ = 31402210656. Its totient is φ = 31399316760.

The previous prime is 31400763703. The next prime is 31400763721. The reversal of 31400763707 is 70736700413.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 31400763707 - 2² = 31400763703 is a prime.

It is a super-2 number, since 2×31400763707² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31400763703) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 690419 + ... + 734492.

It is an arithmetic number, because the mean of its divisors is an integer number (7850552664).

Almost surely, 2^31400763707 is an apocalyptic number.

31400763707 is a deficient number, since it is larger than the sum of its proper divisors (1446949).

31400763707 is a wasteful number, since it uses less digits than its factorization.

31400763707 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1446948.

The product of its (nonzero) digits is 74088, while the sum is 38.

The spelling of 31400763707 in words is "thirty-one billion, four hundred million, seven hundred sixty-three thousand, seven hundred seven".