2402640131 has 4 divisors (see below), whose sum is σ = 2405539200. Its totient is φ = 2399741064.

The previous prime is 2402640127. The next prime is 2402640137. The reversal of 2402640131 is 1310462042.

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 2402640131 - 2² = 2402640127 is a prime.

It is a super-2 number, since 2×2402640131² = 11545359198183394322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2402640097 and 2402640106.

It is not an unprimeable number, because it can be changed into a prime (2402640137) 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, 1448291 + ... + 1449948.

It is an arithmetic number, because the mean of its divisors is an integer number (601384800).

Almost surely, 2^2402640131 is an apocalyptic number.

2402640131 is a deficient number, since it is larger than the sum of its proper divisors (2899069).

2402640131 is an equidigital number, since it uses as much as digits as its factorization.

2402640131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2899068.

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 2402640131 is about 49016.7331734786. The cubic root of 2402640131 is about 1339.3566621100.

The spelling of 2402640131 in words is "two billion, four hundred two million, six hundred forty thousand, one hundred thirty-one".