231311211140031 has 16 divisors (see below), whose sum is σ = 336452926037760. Its totient is φ = 140188506441920.

The previous prime is 231311211140027. The next prime is 231311211140083. The reversal of 231311211140031 is 130041112113132.

231311211140031 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 231311211140031 - 2² = 231311211140027 is a prime.

It is a super-2 number, since 2×231311211140031² (a number of 30 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 231311211139983 and 231311211140010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231311211140231) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 78070150 + ... + 80978828.

It is an arithmetic number, because the mean of its divisors is an integer number (21028307877360).

Almost surely, 2^{231311211140031} is an apocalyptic number.

231311211140031 is a deficient number, since it is larger than the sum of its proper divisors (105141714897729).

231311211140031 is a wasteful number, since it uses less digits than its factorization.

231311211140031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5318526.

The product of its (nonzero) digits is 432, while the sum is 24.

Adding to 231311211140031 its reverse (130041112113132), we get a palindrome (361352323253163).

The spelling of 231311211140031 in words is "two hundred thirty-one trillion, three hundred eleven billion, two hundred eleven million, one hundred forty thousand, thirty-one".