31540063699 has 2 divisors, whose sum is σ = 31540063700. Its totient is φ = 31540063698.

The previous prime is 31540063663. The next prime is 31540063777. The reversal of 31540063699 is 99636004513.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 31540063699 - 2¹³ = 31540055507 is a prime.

It is not a weakly prime, because it can be changed into another prime (31540063799) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15770031849 + 15770031850.

It is an arithmetic number, because the mean of its divisors is an integer number (15770031850).

Almost surely, 2^31540063699 is an apocalyptic number.

31540063699 is a deficient number, since it is larger than the sum of its proper divisors (1).

31540063699 is an equidigital number, since it uses as much as digits as its factorization.

31540063699 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 524880, while the sum is 46.

The spelling of 31540063699 in words is "thirty-one billion, five hundred forty million, sixty-three thousand, six hundred ninety-nine".