231431400001 has 4 divisors (see below), whose sum is σ = 234031752900. Its totient is φ = 228831047104.

The previous prime is 231431399999. The next prime is 231431400029. The reversal of 231431400001 is 100004134132.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 111171563776 + 120259836225 = 333424^2 + 346785^2 .

It is a cyclic number.

It is not a de Polignac number, because 231431400001 - 2¹ = 231431399999 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231431400041) 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, 1300176316 + ... + 1300176493.

It is an arithmetic number, because the mean of its divisors is an integer number (58507938225).

Almost surely, 2^231431400001 is an apocalyptic number.

It is an amenable number.

231431400001 is a deficient number, since it is larger than the sum of its proper divisors (2600352899).

231431400001 is an equidigital number, since it uses as much as digits as its factorization.

231431400001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2600352898.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 231431400001 its reverse (100004134132), we get a palindrome (331435534133).

The spelling of 231431400001 in words is "two hundred thirty-one billion, four hundred thirty-one million, four hundred thousand, one".