231624161426131 has 4 divisors (see below), whose sum is σ = 231631476752032. Its totient is φ = 231616846100232.

The previous prime is 231624161426129. The next prime is 231624161426179. The reversal of 231624161426131 is 131624161426132.

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

It is a cyclic number.

It is not a de Polignac number, because 231624161426131 - 2¹ = 231624161426129 is a prime.

It is a super-2 number, since 2×231624161426131² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231624161486131) 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, 3657615456 + ... + 3657678781.

It is an arithmetic number, because the mean of its divisors is an integer number (57907869188008).

Almost surely, 2^{231624161426131} is an apocalyptic number.

231624161426131 is a deficient number, since it is larger than the sum of its proper divisors (7315325901).

231624161426131 is an equidigital number, since it uses as much as digits as its factorization.

231624161426131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7315325900.

The product of its digits is 248832, while the sum is 43.

Subtracting from 231624161426131 its reverse (131624161426132), we obtain a palindrome (99999999999999).

The spelling of 231624161426131 in words is "two hundred thirty-one trillion, six hundred twenty-four billion, one hundred sixty-one million, four hundred twenty-six thousand, one hundred thirty-one".