31143000022042 has 24 divisors (see below), whose sum is σ = 49315549926996. Its totient is φ = 14748060921984.

The previous prime is 31143000022019. The next prime is 31143000022067. The reversal of 31143000022042 is 24022000034113.

It can be written as a sum of positive squares in 2 ways, for example, as 19822877339521 + 11320122682521 = 4452289^2 + 3364539^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2938623 + ... + 8421490.

Almost surely, 2^{31143000022042} is an apocalyptic number.

31143000022042 is a deficient number, since it is larger than the sum of its proper divisors (18172549904954).

31143000022042 is a wasteful number, since it uses less digits than its factorization.

31143000022042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11363950 (or 11363931 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 31143000022042 its reverse (24022000034113), we get a palindrome (55165000056155).

The spelling of 31143000022042 in words is "thirty-one trillion, one hundred forty-three billion, twenty-two thousand, forty-two".