231504234631 has 8 divisors (see below), whose sum is σ = 236065168800. Its totient is φ = 226950446112.

The previous prime is 231504234629. The next prime is 231504234641. The reversal of 231504234631 is 136432405132.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 231504234631 - 2¹ = 231504234629 is a prime.

It is a super-2 number, since 2×231504234631² (a number of 24 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 (231504234641) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1720956 + ... + 1850593.

It is an arithmetic number, because the mean of its divisors is an integer number (29508146100).

Almost surely, 2^231504234631 is an apocalyptic number.

231504234631 is a deficient number, since it is larger than the sum of its proper divisors (4560934169).

231504234631 is a wasteful number, since it uses less digits than its factorization.

231504234631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3572825.

The product of its (nonzero) digits is 51840, while the sum is 34.

Adding to 231504234631 its reverse (136432405132), we get a palindrome (367936639763).

The spelling of 231504234631 in words is "two hundred thirty-one billion, five hundred four million, two hundred thirty-four thousand, six hundred thirty-one".