31113300973 has 2 divisors, whose sum is σ = 31113300974. Its totient is φ = 31113300972.

The previous prime is 31113300943. The next prime is 31113301013. The reversal of 31113300973 is 37900331113.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 27075715209 + 4037585764 = 164547^2 + 63542^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31113300973 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31113300943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15556650486 + 15556650487.

It is an arithmetic number, because the mean of its divisors is an integer number (15556650487).

Almost surely, 2^31113300973 is an apocalyptic number.

It is an amenable number.

31113300973 is a deficient number, since it is larger than the sum of its proper divisors (1).

31113300973 is an equidigital number, since it uses as much as digits as its factorization.

31113300973 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5103, while the sum is 31.

The spelling of 31113300973 in words is "thirty-one billion, one hundred thirteen million, three hundred thousand, nine hundred seventy-three".