31134123239 has 2 divisors, whose sum is σ = 31134123240. Its totient is φ = 31134123238.

The previous prime is 31134123227. The next prime is 31134123257. The reversal of 31134123239 is 93232143113.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 31134123239 - 2¹² = 31134119143 is a prime.

It is a super-2 number, since 2×31134123239² (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 (31134123439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15567061619 + 15567061620.

It is an arithmetic number, because the mean of its divisors is an integer number (15567061620).

Almost surely, 2^31134123239 is an apocalyptic number.

31134123239 is a deficient number, since it is larger than the sum of its proper divisors (1).

31134123239 is an equidigital number, since it uses as much as digits as its factorization.

31134123239 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11664, while the sum is 32.

The spelling of 31134123239 in words is "thirty-one billion, one hundred thirty-four million, one hundred twenty-three thousand, two hundred thirty-nine".