101231233131 has 16 divisors (see below), whose sum is σ = 154288697600. Its totient is φ = 57834576288.

The previous prime is 101231233127. The next prime is 101231233139. The reversal of 101231233131 is 131332132101.

It is a happy number.

It is not a de Polignac number, because 101231233131 - 2² = 101231233127 is a prime.

It is a super-2 number, since 2×101231233131² (a number of 23 digits) contains 22 as substring.

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

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 101231233098 and 101231233107.

It is not an unprimeable number, because it can be changed into a prime (101231233139) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 387901 + ... + 594078.

It is an arithmetic number, because the mean of its divisors is an integer number (9643043600).

Almost surely, 2^101231233131 is an apocalyptic number.

101231233131 is a deficient number, since it is larger than the sum of its proper divisors (53057464469).

101231233131 is an equidigital number, since it uses as much as digits as its factorization.

101231233131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 986898.

The product of its (nonzero) digits is 324, while the sum is 21.

Adding to 101231233131 its reverse (131332132101), we get a palindrome (232563365232).

The spelling of 101231233131 in words is "one hundred one billion, two hundred thirty-one million, two hundred thirty-three thousand, one hundred thirty-one".