231241376731 has 2 divisors, whose sum is σ = 231241376732. Its totient is φ = 231241376730.

The previous prime is 231241376713. The next prime is 231241376767. The reversal of 231241376731 is 137673142132.

It is a happy number.

Together with previous prime (231241376713) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 231241376731 - 2⁷ = 231241376603 is a prime.

It is a super-2 number, since 2×231241376731² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (231241374731) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115620688365 + 115620688366.

It is an arithmetic number, because the mean of its divisors is an integer number (115620688366).

Almost surely, 2^231241376731 is an apocalyptic number.

231241376731 is a deficient number, since it is larger than the sum of its proper divisors (1).

231241376731 is an equidigital number, since it uses as much as digits as its factorization.

231241376731 is an evil number, because the sum of its binary digits is even.

The product of its digits is 127008, while the sum is 40.

The spelling of 231241376731 in words is "two hundred thirty-one billion, two hundred forty-one million, three hundred seventy-six thousand, seven hundred thirty-one".