31000196839 has 2 divisors, whose sum is σ = 31000196840. Its totient is φ = 31000196838.

The previous prime is 31000196791. The next prime is 31000196849. The reversal of 31000196839 is 93869100013.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 31000196839 - 2²⁹ = 30463325927 is a prime.

It is a super-2 number, since 2×31000196839² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31000196849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15500098419 + 15500098420.

It is an arithmetic number, because the mean of its divisors is an integer number (15500098420).

Almost surely, 2^31000196839 is an apocalyptic number.

31000196839 is a deficient number, since it is larger than the sum of its proper divisors (1).

31000196839 is an equidigital number, since it uses as much as digits as its factorization.

31000196839 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 34992, while the sum is 40.

The spelling of 31000196839 in words is "thirty-one billion, one hundred ninety-six thousand, eight hundred thirty-nine".