231200002232031 has 32 divisors (see below), whose sum is σ = 357790990240768. Its totient is φ = 130063643170560.

The previous prime is 231200002231949. The next prime is 231200002232051. The reversal of 231200002232031 is 130232200002132.

It is a happy number.

It is not a de Polignac number, because 231200002232031 - 2²¹ = 231200000134879 is a prime.

It is a super-2 number, since 2×231200002232031² (a number of 30 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 231200002231989 and 231200002232007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231200002232051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 138556411 + ... + 140215116.

It is an arithmetic number, because the mean of its divisors is an integer number (11180968445024).

Almost surely, 2^{231200002232031} is an apocalyptic number.

231200002232031 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

231200002232031 is a deficient number, since it is larger than the sum of its proper divisors (126590988008737).

231200002232031 is a wasteful number, since it uses less digits than its factorization.

231200002232031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 278772151.

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 231200002232031 its reverse (130232200002132), we get a palindrome (361432202234163).

The spelling of 231200002232031 in words is "two hundred thirty-one trillion, two hundred billion, two million, two hundred thirty-two thousand, thirty-one".