40351457731 has 8 divisors (see below), whose sum is σ = 43645180880. Its totient is φ = 37084843872.

The previous prime is 40351457719. The next prime is 40351457749. The reversal of 40351457731 is 13775415304.

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

It is a cyclic number.

It is not a de Polignac number, because 40351457731 - 2⁷ = 40351457603 is a prime.

It is a super-2 number, since 2×40351457731² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40351457701) 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, 6774225 + ... + 6780178.

It is an arithmetic number, because the mean of its divisors is an integer number (5455647610).

Almost surely, 2^40351457731 is an apocalyptic number.

40351457731 is a deficient number, since it is larger than the sum of its proper divisors (3293723149).

40351457731 is a wasteful number, since it uses less digits than its factorization.

40351457731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13554645.

The product of its (nonzero) digits is 176400, while the sum is 40.

The spelling of 40351457731 in words is "forty billion, three hundred fifty-one million, four hundred fifty-seven thousand, seven hundred thirty-one".