4013131101231 has 24 divisors (see below), whose sum is σ = 6309714669744. Its totient is φ = 2261803824000.

The previous prime is 4013131101227. The next prime is 4013131101283. The reversal of 4013131101231 is 1321011313104.

It is not a de Polignac number, because 4013131101231 - 2² = 4013131101227 is a prime.

It is a super-2 number, since 2×4013131101231² (a number of 26 digits) contains 22 as substring.

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

It is a junction number, because it is equal to n+sod(n) for n = 4013131101198 and 4013131101207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4013131101131) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 186977020 + ... + 186998481.

It is an arithmetic number, because the mean of its divisors is an integer number (262904777906).

Almost surely, 2^{4013131101231} is an apocalyptic number.

4013131101231 is a deficient number, since it is larger than the sum of its proper divisors (2296583568513).

4013131101231 is a wasteful number, since it uses less digits than its factorization.

4013131101231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 373975591 (or 373975584 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 21.

Adding to 4013131101231 its reverse (1321011313104), we get a palindrome (5334142414335).

The spelling of 4013131101231 in words is "four trillion, thirteen billion, one hundred thirty-one million, one hundred one thousand, two hundred thirty-one".