31200897842 has 8 divisors (see below), whose sum is σ = 49264575600. Its totient is φ = 14779372644.

The previous prime is 31200897817. The next prime is 31200897853. The reversal of 31200897842 is 24879800213.

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

It is a super-2 number, since 2×31200897842² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 31200897793 and 31200897802.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 410538092 + ... + 410538167.

It is an arithmetic number, because the mean of its divisors is an integer number (6158071950).

Almost surely, 2^31200897842 is an apocalyptic number.

31200897842 is a deficient number, since it is larger than the sum of its proper divisors (18063677758).

31200897842 is a wasteful number, since it uses less digits than its factorization.

31200897842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 821076280.

The product of its (nonzero) digits is 193536, while the sum is 44.

The spelling of 31200897842 in words is "thirty-one billion, two hundred million, eight hundred ninety-seven thousand, eight hundred forty-two".