231009881051 has 2 divisors, whose sum is σ = 231009881052. Its totient is φ = 231009881050.

The previous prime is 231009881041. The next prime is 231009881059. The reversal of 231009881051 is 150188900132.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-231009881051 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 231009880996 and 231009881014.

It is not a weakly prime, because it can be changed into another prime (231009881059) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115504940525 + 115504940526.

It is an arithmetic number, because the mean of its divisors is an integer number (115504940526).

Almost surely, 2^231009881051 is an apocalyptic number.

231009881051 is a deficient number, since it is larger than the sum of its proper divisors (1).

231009881051 is an equidigital number, since it uses as much as digits as its factorization.

231009881051 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17280, while the sum is 38.

The spelling of 231009881051 in words is "two hundred thirty-one billion, nine million, eight hundred eighty-one thousand, fifty-one".