101031312331 has 4 divisors (see below), whose sum is σ = 101218062064. Its totient is φ = 100844562600.

The previous prime is 101031312313. The next prime is 101031312433. The reversal of 101031312331 is 133213130101.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 133213130101 = 883 ⋅150864247.

It is a cyclic number.

It is not a de Polignac number, because 101031312331 - 2⁵ = 101031312299 is a prime.

It is a super-2 number, since 2×101031312331² (a number of 23 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 = 101031312299 and 101031312308.

It is not an unprimeable number, because it can be changed into a prime (101031312311) 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, 93374055 + ... + 93375136.

It is an arithmetic number, because the mean of its divisors is an integer number (25304515516).

Almost surely, 2^101031312331 is an apocalyptic number.

101031312331 is a deficient number, since it is larger than the sum of its proper divisors (186749733).

101031312331 is an equidigital number, since it uses as much as digits as its factorization.

101031312331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186749732.

The product of its (nonzero) digits is 162, while the sum is 19.

Adding to 101031312331 its reverse (133213130101), we get a palindrome (234244442432).

The spelling of 101031312331 in words is "one hundred one billion, thirty-one million, three hundred twelve thousand, three hundred thirty-one".