31234314434231 has 4 divisors (see below), whose sum is σ = 31234672988472. Its totient is φ = 31233955879992.

The previous prime is 31234314434117. The next prime is 31234314434249. The reversal of 31234314434231 is 13243441343213.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31234314434231 is a prime.

It is a super-2 number, since 2×31234314434231² (a number of 28 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 (31234314434731) 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, 179146421 + ... + 179320686.

It is an arithmetic number, because the mean of its divisors is an integer number (7808668247118).

Almost surely, 2^{31234314434231} is an apocalyptic number.

31234314434231 is a deficient number, since it is larger than the sum of its proper divisors (358554241).

31234314434231 is an equidigital number, since it uses as much as digits as its factorization.

31234314434231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 358554240.

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

Adding to 31234314434231 its reverse (13243441343213), we get a palindrome (44477755777444).

The spelling of 31234314434231 in words is "thirty-one trillion, two hundred thirty-four billion, three hundred fourteen million, four hundred thirty-four thousand, two hundred thirty-one".