3131240022 has 24 divisors (see below), whose sum is σ = 6789595176. Its totient is φ = 1042940256.

The previous prime is 3131240011. The next prime is 3131240023. The reversal of 3131240022 is 2200421313.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 3131239977 and 3131240004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3131240023) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 43023 + ... + 90074.

It is an arithmetic number, because the mean of its divisors is an integer number (282899799).

Almost surely, 2^3131240022 is an apocalyptic number.

3131240022 is an abundant number, since it is smaller than the sum of its proper divisors (3658355154).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3131240022 is a wasteful number, since it uses less digits than its factorization.

3131240022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134412 (or 134409 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 3131240022 is about 55957.4840570946. The cubic root of 3131240022 is about 1462.9813386495.

Adding to 3131240022 its reverse (2200421313), we get a palindrome (5331661335).

The spelling of 3131240022 in words is "three billion, one hundred thirty-one million, two hundred forty thousand, twenty-two".