231321110103731 has 2 divisors, whose sum is σ = 231321110103732. Its totient is φ = 231321110103730.

The previous prime is 231321110103703. The next prime is 231321110103757. The reversal of 231321110103731 is 137301011123132.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 231321110103731 - 2²² = 231321105909427 is a prime.

It is a super-2 number, since 2×231321110103731² (a number of 30 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 231321110103694 and 231321110103703.

It is not a weakly prime, because it can be changed into another prime (231321110103701) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115660555051865 + 115660555051866.

It is an arithmetic number, because the mean of its divisors is an integer number (115660555051866).

Almost surely, 2^{231321110103731} is an apocalyptic number.

231321110103731 is a deficient number, since it is larger than the sum of its proper divisors (1).

231321110103731 is an equidigital number, since it uses as much as digits as its factorization.

231321110103731 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2268, while the sum is 29.

Adding to 231321110103731 its reverse (137301011123132), we get a palindrome (368622121226863).

The spelling of 231321110103731 in words is "two hundred thirty-one trillion, three hundred twenty-one billion, one hundred ten million, one hundred three thousand, seven hundred thirty-one".