40687031 has 8 divisors (see below), whose sum is σ = 50726784. Its totient is φ = 31704120.

The previous prime is 40687027. The next prime is 40687039. The reversal of 40687031 is 13078604.

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

It is not a de Polignac number, because 40687031 - 2² = 40687027 is a prime.

It is a super-2 number, since 2×40687031² = 3310868983189922, 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 = 40686985 and 40687003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40687039) 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, 264125 + ... + 264278.

It is an arithmetic number, because the mean of its divisors is an integer number (6340848).

Almost surely, 2^40687031 is an apocalyptic number.

40687031 is a deficient number, since it is larger than the sum of its proper divisors (10039753).

40687031 is a wasteful number, since it uses less digits than its factorization.

40687031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 528421.

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 40687031 is about 6378.6386478621. The cubic root of 40687031 is about 343.9420957838.

The spelling of 40687031 in words is "forty million, six hundred eighty-seven thousand, thirty-one".