1020130231231 has 16 divisors (see below), whose sum is σ = 1032500160000. Its totient is φ = 1007837585568.

The previous prime is 1020130231229. The next prime is 1020130231261. The reversal of 1020130231231 is 1321320310201.

It is a cyclic number.

It is not a de Polignac number, because 1020130231231 - 2¹ = 1020130231229 is a prime.

It is a super-2 number, since 2×1020130231231² (a number of 25 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 = 1020130231199 and 1020130231208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020130231261) 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, 135886780 + ... + 135894286.

It is an arithmetic number, because the mean of its divisors is an integer number (64531260000).

Almost surely, 2^{1020130231231} is an apocalyptic number.

1020130231231 is a deficient number, since it is larger than the sum of its proper divisors (12369928769).

1020130231231 is a wasteful number, since it uses less digits than its factorization.

1020130231231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12438.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 1020130231231 its reverse (1321320310201), we get a palindrome (2341450541432).

The spelling of 1020130231231 in words is "one trillion, twenty billion, one hundred thirty million, two hundred thirty-one thousand, two hundred thirty-one".