124311783131 has 4 divisors (see below), whose sum is σ = 124315196064. Its totient is φ = 124308370200.

The previous prime is 124311783091. The next prime is 124311783139. The reversal of 124311783131 is 131387113421.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 131387113421 = 11587 ⋅11339183.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-124311783131 is a prime.

It is a super-2 number, since 2×124311783131² (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 = 124311783091 and 124311783100.

It is not an unprimeable number, because it can be changed into a prime (124311783139) 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, 1651235 + ... + 1724876.

It is an arithmetic number, because the mean of its divisors is an integer number (31078799016).

Almost surely, 2^124311783131 is an apocalyptic number.

124311783131 is a deficient number, since it is larger than the sum of its proper divisors (3412933).

124311783131 is an equidigital number, since it uses as much as digits as its factorization.

124311783131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3412932.

The product of its digits is 12096, while the sum is 35.

Adding to 124311783131 its reverse (131387113421), we get a palindrome (255698896552).

The spelling of 124311783131 in words is "one hundred twenty-four billion, three hundred eleven million, seven hundred eighty-three thousand, one hundred thirty-one".