231113551327381 has 2 divisors, whose sum is σ = 231113551327382. Its totient is φ = 231113551327380.

The previous prime is 231113551327343. The next prime is 231113551327469. The reversal of 231113551327381 is 183723155311132.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 158311001908900 + 72802549418481 = 12582170^2 + 8532441^2 .

It is a cyclic number.

It is not a de Polignac number, because 231113551327381 - 2⁴¹ = 228914528071829 is a prime.

It is a super-2 number, since 2×231113551327381² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (231113551327081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115556775663690 + 115556775663691.

It is an arithmetic number, because the mean of its divisors is an integer number (115556775663691).

Almost surely, 2^{231113551327381} is an apocalyptic number.

It is an amenable number.

231113551327381 is a deficient number, since it is larger than the sum of its proper divisors (1).

231113551327381 is an equidigital number, since it uses as much as digits as its factorization.

231113551327381 is an evil number, because the sum of its binary digits is even.

The product of its digits is 453600, while the sum is 46.

The spelling of 231113551327381 in words is "two hundred thirty-one trillion, one hundred thirteen billion, five hundred fifty-one million, three hundred twenty-seven thousand, three hundred eighty-one".