231433144031 has 4 divisors (see below), whose sum is σ = 231434127000. Its totient is φ = 231432161064.

The previous prime is 231433144027. The next prime is 231433144081. The reversal of 231433144031 is 130441334132.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 231433144031 - 2² = 231433144027 is a prime.

It is a super-2 number, since 2×231433144031² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 231433143985 and 231433144003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231433144081) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 94820 + ... + 686918.

It is an arithmetic number, because the mean of its divisors is an integer number (57858531750).

Almost surely, 2^231433144031 is an apocalyptic number.

231433144031 is a deficient number, since it is larger than the sum of its proper divisors (982969).

231433144031 is an equidigital number, since it uses as much as digits as its factorization.

231433144031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 982968.

The product of its (nonzero) digits is 10368, while the sum is 29.

Adding to 231433144031 its reverse (130441334132), we get a palindrome (361874478163).

The spelling of 231433144031 in words is "two hundred thirty-one billion, four hundred thirty-three million, one hundred forty-four thousand, thirty-one".