31111042208 has 48 divisors (see below), whose sum is σ = 62169849000. Its totient is φ = 15323185152.

The previous prime is 31111042199. The next prime is 31111042229. The reversal of 31111042208 is 80224011113.

It can be written as a sum of positive squares in 4 ways, for example, as 9740110864 + 21370931344 = 98692^2 + 146188^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 745808 + ... + 786416.

Almost surely, 2^31111042208 is an apocalyptic number.

It is an amenable number.

31111042208 is a deficient number, since it is larger than the sum of its proper divisors (31058806792).

31111042208 is a wasteful number, since it uses less digits than its factorization.

31111042208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40977 (or 40969 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 23.

The spelling of 31111042208 in words is "thirty-one billion, one hundred eleven million, forty-two thousand, two hundred eight".