31857740023 has 8 divisors (see below), whose sum is σ = 32904819200. Its totient is φ = 30811874040.

The previous prime is 31857739999. The next prime is 31857740029. The reversal of 31857740023 is 32004775813.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31857740023 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31857740029) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 249765 + ... + 355102.

It is an arithmetic number, because the mean of its divisors is an integer number (4113102400).

Almost surely, 2^31857740023 is an apocalyptic number.

31857740023 is a deficient number, since it is larger than the sum of its proper divisors (1047079177).

31857740023 is a wasteful number, since it uses less digits than its factorization.

31857740023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 606597.

The product of its (nonzero) digits is 141120, while the sum is 40.

The spelling of 31857740023 in words is "thirty-one billion, eight hundred fifty-seven million, seven hundred forty thousand, twenty-three".