31004020339 has 2 divisors, whose sum is σ = 31004020340. Its totient is φ = 31004020338.

The previous prime is 31004020319. The next prime is 31004020349. The reversal of 31004020339 is 93302040013.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 31004020339 - 2²⁷ = 30869802611 is a prime.

It is a super-2 number, since 2×31004020339² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (31004020319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15502010169 + 15502010170.

It is an arithmetic number, because the mean of its divisors is an integer number (15502010170).

Almost surely, 2^31004020339 is an apocalyptic number.

31004020339 is a deficient number, since it is larger than the sum of its proper divisors (1).

31004020339 is an equidigital number, since it uses as much as digits as its factorization.

31004020339 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1944, while the sum is 25.

The spelling of 31004020339 in words is "thirty-one billion, four million, twenty thousand, three hundred thirty-nine".