231023443431431 has 32 divisors (see below), whose sum is σ = 275832045674496. Its totient is φ = 189186602220000.

The previous prime is 231023443431427. The next prime is 231023443431437. The reversal of 231023443431431 is 134134344320132.

It is not a de Polignac number, because 231023443431431 - 2² = 231023443431427 is a prime.

It is a super-2 number, since 2×231023443431431² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231023443431437) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 742850036 + ... + 743160966.

It is an arithmetic number, because the mean of its divisors is an integer number (8619751427328).

Almost surely, 2^{231023443431431} is an apocalyptic number.

231023443431431 is a deficient number, since it is larger than the sum of its proper divisors (44808602243065).

231023443431431 is a wasteful number, since it uses less digits than its factorization.

231023443431431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 316403.

The product of its (nonzero) digits is 248832, while the sum is 38.

Adding to 231023443431431 its reverse (134134344320132), we get a palindrome (365157787751563).

The spelling of 231023443431431 in words is "two hundred thirty-one trillion, twenty-three billion, four hundred forty-three million, four hundred thirty-one thousand, four hundred thirty-one".