40631356 has 6 divisors (see below), whose sum is σ = 71104880. Its totient is φ = 20315676.

The previous prime is 40631351. The next prime is 40631387. The reversal of 40631356 is 65313604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40631351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5078916 + ... + 5078923.

Almost surely, 2^40631356 is an apocalyptic number.

It is an amenable number.

40631356 is a deficient number, since it is larger than the sum of its proper divisors (30473524).

40631356 is a wasteful number, since it uses less digits than its factorization.

40631356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10157843 (or 10157841 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 28.

The square root of 40631356 is about 6374.2729781521. The cubic root of 40631356 is about 343.7851439110.

The spelling of 40631356 in words is "forty million, six hundred thirty-one thousand, three hundred fifty-six".