2540334731 has 8 divisors (see below), whose sum is σ = 2778829824. Its totient is φ = 2303098920.

The previous prime is 2540334673. The next prime is 2540334733. The reversal of 2540334731 is 1374330452.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2540334731 is a prime.

It is a super-2 number, since 2×2540334731² = 12906601091049684722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2540334733) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 310595 + ... + 318668.

It is an arithmetic number, because the mean of its divisors is an integer number (347353728).

Almost surely, 2^2540334731 is an apocalyptic number.

2540334731 is a deficient number, since it is larger than the sum of its proper divisors (238495093).

2540334731 is a wasteful number, since it uses less digits than its factorization.

2540334731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 629641.

The product of its (nonzero) digits is 30240, while the sum is 32.

The square root of 2540334731 is about 50401.7334126516. The cubic root of 2540334731 is about 1364.4689228236.

The spelling of 2540334731 in words is "two billion, five hundred forty million, three hundred thirty-four thousand, seven hundred thirty-one".