31457232011 has 2 divisors, whose sum is σ = 31457232012. Its totient is φ = 31457232010.

The previous prime is 31457231999. The next prime is 31457232013. The reversal of 31457232011 is 11023275413.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 31457232011 - 2³⁰ = 30383490187 is a prime.

Together with 31457232013, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (31457232013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15728616005 + 15728616006.

It is an arithmetic number, because the mean of its divisors is an integer number (15728616006).

Almost surely, 2^31457232011 is an apocalyptic number.

31457232011 is a deficient number, since it is larger than the sum of its proper divisors (1).

31457232011 is an equidigital number, since it uses as much as digits as its factorization.

31457232011 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5040, while the sum is 29.

The spelling of 31457232011 in words is "thirty-one billion, four hundred fifty-seven million, two hundred thirty-two thousand, eleven".