2400313681 has 4 divisors (see below), whose sum is σ = 2526646000. Its totient is φ = 2273981364.

The previous prime is 2400313639. The next prime is 2400313703. The reversal of 2400313681 is 1863130042.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2400313681 - 2¹³ = 2400305489 is a prime.

It is a super-2 number, since 2×2400313681² = 11523011534391539522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2400313781) 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, 63166131 + ... + 63166168.

It is an arithmetic number, because the mean of its divisors is an integer number (631661500).

Almost surely, 2^2400313681 is an apocalyptic number.

It is an amenable number.

2400313681 is a deficient number, since it is larger than the sum of its proper divisors (126332319).

2400313681 is a wasteful number, since it uses less digits than its factorization.

2400313681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126332318.

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 2400313681 is about 48992.9962443613. The cubic root of 2400313681 is about 1338.9242277336.

The spelling of 2400313681 in words is "two billion, four hundred million, three hundred thirteen thousand, six hundred eighty-one".