31540511339 has 2 divisors, whose sum is σ = 31540511340. Its totient is φ = 31540511338.

The previous prime is 31540511291. The next prime is 31540511369. The reversal of 31540511339 is 93311504513.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 31540511339 - 2²⁰ = 31539462763 is a prime.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 31540511299 and 31540511308.

It is not a weakly prime, because it can be changed into another prime (31540511369) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15770255669 + 15770255670.

It is an arithmetic number, because the mean of its divisors is an integer number (15770255670).

Almost surely, 2^31540511339 is an apocalyptic number.

31540511339 is a deficient number, since it is larger than the sum of its proper divisors (1).

31540511339 is an equidigital number, since it uses as much as digits as its factorization.

31540511339 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24300, while the sum is 35.

The spelling of 31540511339 in words is "thirty-one billion, five hundred forty million, five hundred eleven thousand, three hundred thirty-nine".