101231112131 has 4 divisors (see below), whose sum is σ = 101506946592. Its totient is φ = 100955277672.

The previous prime is 101231112127. The next prime is 101231112133. The reversal of 101231112131 is 131211132101.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 131211132101 = 7 ⋅18744447443.

It is a cyclic number.

It is not a de Polignac number, because 101231112131 - 2² = 101231112127 is a prime.

It is a super-2 number, since 2×101231112131² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (101231112133) 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, 137916680 + ... + 137917413.

It is an arithmetic number, because the mean of its divisors is an integer number (25376736648).

Almost surely, 2^101231112131 is an apocalyptic number.

101231112131 is a deficient number, since it is larger than the sum of its proper divisors (275834461).

101231112131 is an equidigital number, since it uses as much as digits as its factorization.

101231112131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 275834460.

The product of its (nonzero) digits is 36, while the sum is 17.

Adding to 101231112131 its reverse (131211132101), we get a palindrome (232442244232).

The spelling of 101231112131 in words is "one hundred one billion, two hundred thirty-one million, one hundred twelve thousand, one hundred thirty-one".