231400231131 has 32 divisors (see below), whose sum is σ = 319930490880. Its totient is φ = 148670904096.

The previous prime is 231400231129. The next prime is 231400231171. The reversal of 231400231131 is 131132004132.

231400231131 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 231400231131 - 2¹ = 231400231129 is a prime.

It is a super-2 number, since 2×231400231131² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 231400231098 and 231400231107.

It is not an unprimeable number, because it can be changed into a prime (231400231171) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 44955700 + ... + 44960846.

It is an arithmetic number, because the mean of its divisors is an integer number (9997827840).

Almost surely, 2^231400231131 is an apocalyptic number.

231400231131 is a deficient number, since it is larger than the sum of its proper divisors (88530259749).

231400231131 is a wasteful number, since it uses less digits than its factorization.

231400231131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10023.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 231400231131 its reverse (131132004132), we get a palindrome (362532235263).

The spelling of 231400231131 in words is "two hundred thirty-one billion, four hundred million, two hundred thirty-one thousand, one hundred thirty-one".