31042402039 has 16 divisors (see below), whose sum is σ = 34033388544. Its totient is φ = 28079848800.

The previous prime is 31042402021. The next prime is 31042402073. The reversal of 31042402039 is 93020424013.

It is a cyclic number.

It is not a de Polignac number, because 31042402039 - 2⁵ = 31042402007 is a prime.

It is a super-3 number, since 3×31042402039³ (a number of 32 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31042401998 and 31042402016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31042402009) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2447037 + ... + 2459689.

It is an arithmetic number, because the mean of its divisors is an integer number (2127086784).

Almost surely, 2^31042402039 is an apocalyptic number.

31042402039 is a deficient number, since it is larger than the sum of its proper divisors (2990986505).

31042402039 is a wasteful number, since it uses less digits than its factorization.

31042402039 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13758.

The product of its (nonzero) digits is 5184, while the sum is 28.

The spelling of 31042402039 in words is "thirty-one billion, forty-two million, four hundred two thousand, thirty-nine".