31200042022 has 12 divisors (see below), whose sum is σ = 48469509036. Its totient is φ = 15062088440.

The previous prime is 31200042019. The next prime is 31200042031. The reversal of 31200042022 is 22024000213.

It is a junction number, because it is equal to n+sod(n) for n = 31200041987 and 31200042005.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 9273004 + ... + 9276367.

It is an arithmetic number, because the mean of its divisors is an integer number (4039125753).

Almost surely, 2^31200042022 is an apocalyptic number.

31200042022 is a deficient number, since it is larger than the sum of its proper divisors (17269467014).

31200042022 is a wasteful number, since it uses less digits than its factorization.

31200042022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18549431 (or 18549402 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

Adding to 31200042022 its reverse (22024000213), we get a palindrome (53224042235).

The spelling of 31200042022 in words is "thirty-one billion, two hundred million, forty-two thousand, twenty-two".