31232123249 has 2 divisors, whose sum is σ = 31232123250. Its totient is φ = 31232123248.

The previous prime is 31232123201. The next prime is 31232123261. The reversal of 31232123249 is 94232123213.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 27620113249 + 3612010000 = 166193^2 + 60100^2 .

It is a cyclic number.

It is not a de Polignac number, because 31232123249 - 2¹⁶ = 31232057713 is a prime.

It is not a weakly prime, because it can be changed into another prime (31232423249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15616061624 + 15616061625.

It is an arithmetic number, because the mean of its divisors is an integer number (15616061625).

Almost surely, 2^31232123249 is an apocalyptic number.

It is an amenable number.

31232123249 is a deficient number, since it is larger than the sum of its proper divisors (1).

31232123249 is an equidigital number, since it uses as much as digits as its factorization.

31232123249 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15552, while the sum is 32.

The spelling of 31232123249 in words is "thirty-one billion, two hundred thirty-two million, one hundred twenty-three thousand, two hundred forty-nine".