231203233320131 has 4 divisors (see below), whose sum is σ = 231228783471000. Its totient is φ = 231177683169264.

The previous prime is 231203233319999. The next prime is 231203233320133. The reversal of 231203233320131 is 131023332302132.

231203233320131 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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-231203233320131 is a prime.

It is a super-2 number, since 2×231203233320131² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 231203233320094 and 231203233320103.

It is not an unprimeable number, because it can be changed into a prime (231203233320133) 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, 12775061861 + ... + 12775079958.

It is an arithmetic number, because the mean of its divisors is an integer number (57807195867750).

Almost surely, 2^{231203233320131} is an apocalyptic number.

231203233320131 is a deficient number, since it is larger than the sum of its proper divisors (25550150869).

231203233320131 is an equidigital number, since it uses as much as digits as its factorization.

231203233320131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25550150868.

The product of its (nonzero) digits is 11664, while the sum is 29.

Adding to 231203233320131 its reverse (131023332302132), we get a palindrome (362226565622263).

The spelling of 231203233320131 in words is "two hundred thirty-one trillion, two hundred three billion, two hundred thirty-three million, three hundred twenty thousand, one hundred thirty-one".