231354131051 has 4 divisors (see below), whose sum is σ = 233018549400. Its totient is φ = 229689712704.

The previous prime is 231354131023. The next prime is 231354131069. The reversal of 231354131051 is 150131453132.

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-231354131051 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231354131851) 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, 832208966 + ... + 832209243.

It is an arithmetic number, because the mean of its divisors is an integer number (58254637350).

Almost surely, 2^231354131051 is an apocalyptic number.

231354131051 is a deficient number, since it is larger than the sum of its proper divisors (1664418349).

231354131051 is a wasteful number, since it uses less digits than its factorization.

231354131051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1664418348.

The product of its (nonzero) digits is 5400, while the sum is 29.

Adding to 231354131051 its reverse (150131453132), we get a palindrome (381485584183).

The spelling of 231354131051 in words is "two hundred thirty-one billion, three hundred fifty-four million, one hundred thirty-one thousand, fifty-one".