31112101249 has 2 divisors, whose sum is σ = 31112101250. Its totient is φ = 31112101248.

The previous prime is 31112101201. The next prime is 31112101271. The reversal of 31112101249 is 94210121113.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 24415625025 + 6696476224 = 156255^2 + 81832^2 .

It is a cyclic number.

It is not a de Polignac number, because 31112101249 - 2⁷ = 31112101121 is a prime.

It is not a weakly prime, because it can be changed into another prime (31112108249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15556050624 + 15556050625.

It is an arithmetic number, because the mean of its divisors is an integer number (15556050625).

Almost surely, 2^31112101249 is an apocalyptic number.

It is an amenable number.

31112101249 is a deficient number, since it is larger than the sum of its proper divisors (1).

31112101249 is an equidigital number, since it uses as much as digits as its factorization.

31112101249 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 25.

The spelling of 31112101249 in words is "thirty-one billion, one hundred twelve million, one hundred one thousand, two hundred forty-nine".