31232430401 has 4 divisors (see below), whose sum is σ = 31233561600. Its totient is φ = 31231299204.

The previous prime is 31232430391. The next prime is 31232430403. The reversal of 31232430401 is 10403423213.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31232430401 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (31232430403) 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, 523121 + ... + 579758.

It is an arithmetic number, because the mean of its divisors is an integer number (7808390400).

Almost surely, 2^31232430401 is an apocalyptic number.

It is an amenable number.

31232430401 is a deficient number, since it is larger than the sum of its proper divisors (1131199).

31232430401 is a wasteful number, since it uses less digits than its factorization.

31232430401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1131198.

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 31232430401 its reverse (10403423213), we get a palindrome (41635853614).

The spelling of 31232430401 in words is "thirty-one billion, two hundred thirty-two million, four hundred thirty thousand, four hundred one".