40713381 has 32 divisors (see below), whose sum is σ = 64177920. Its totient is φ = 25451712.

The previous prime is 40713377. The next prime is 40713391. The reversal of 40713381 is 18331704.

It is not a de Polignac number, because 40713381 - 2² = 40713377 is a prime.

It is a super-2 number, since 2×40713381² = 3315158784902322, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40713391) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 32295 + ... + 33531.

It is an arithmetic number, because the mean of its divisors is an integer number (2005560).

Almost surely, 2^40713381 is an apocalyptic number.

It is an amenable number.

40713381 is a deficient number, since it is larger than the sum of its proper divisors (23464539).

40713381 is a wasteful number, since it uses less digits than its factorization.

40713381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1322 (or 1316 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 40713381 is about 6380.7038013059. The cubic root of 40713381 is about 344.0163284344.

The spelling of 40713381 in words is "forty million, seven hundred thirteen thousand, three hundred eighty-one".