31146853979 has 2 divisors, whose sum is σ = 31146853980. Its totient is φ = 31146853978.

The previous prime is 31146853901. The next prime is 31146853981. The reversal of 31146853979 is 97935864113.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 31146853979 - 2¹⁶ = 31146788443 is a prime.

Together with 31146853981, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (31146853579) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15573426989 + 15573426990.

It is an arithmetic number, because the mean of its divisors is an integer number (15573426990).

Almost surely, 2^31146853979 is an apocalyptic number.

31146853979 is a deficient number, since it is larger than the sum of its proper divisors (1).

31146853979 is an equidigital number, since it uses as much as digits as its factorization.

31146853979 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4898880, while the sum is 56.

The spelling of 31146853979 in words is "thirty-one billion, one hundred forty-six million, eight hundred fifty-three thousand, nine hundred seventy-nine".