40751831 has 8 divisors (see below), whose sum is σ = 42408960. Its totient is φ = 39127032.

The previous prime is 40751807. The next prime is 40751857. The reversal of 40751831 is 13815704.

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-40751831 is a prime.

It is a super-2 number, since 2×40751831² = 3321423459705122, 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 = 40751794 and 40751803.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40751801) 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, 5495 + ... + 10568.

It is an arithmetic number, because the mean of its divisors is an integer number (5301120).

Almost surely, 2^40751831 is an apocalyptic number.

40751831 is a deficient number, since it is larger than the sum of its proper divisors (1657129).

40751831 is a wasteful number, since it uses less digits than its factorization.

40751831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16165.

The product of its (nonzero) digits is 3360, while the sum is 29.

The square root of 40751831 is about 6383.7160807793. The cubic root of 40751831 is about 344.1245914973.

The spelling of 40751831 in words is "forty million, seven hundred fifty-one thousand, eight hundred thirty-one".