101023131321031 has 4 divisors (see below), whose sum is σ = 102407009832352. Its totient is φ = 99639252809712.

The previous prime is 101023131320983. The next prime is 101023131321037. The reversal of 101023131321031 is 130123131320101.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 101023131321031 - 2²¹ = 101023129223879 is a prime.

It is a super-2 number, since 2×101023131321031² (a number of 29 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 = 101023131320993 and 101023131321011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101023131321037) 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, 691939255551 + ... + 691939255696.

It is an arithmetic number, because the mean of its divisors is an integer number (25601752458088).

Almost surely, 2^{101023131321031} is an apocalyptic number.

101023131321031 is a deficient number, since it is larger than the sum of its proper divisors (1383878511321).

101023131321031 is an equidigital number, since it uses as much as digits as its factorization.

101023131321031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1383878511320.

The product of its (nonzero) digits is 324, while the sum is 22.

Adding to 101023131321031 its reverse (130123131320101), we get a palindrome (231146262641132).

The spelling of 101023131321031 in words is "one hundred one trillion, twenty-three billion, one hundred thirty-one million, three hundred twenty-one thousand, thirty-one".