40162313 has 4 divisors (see below), whose sum is σ = 42524820. Its totient is φ = 37799808.

The previous prime is 40162307. The next prime is 40162319. The reversal of 40162313 is 31326104.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (40162307) and next prime (40162319).

It can be written as a sum of positive squares in 2 ways, for example, as 34904464 + 5257849 = 5908^2 + 2293^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40162313 is a prime.

It is a super-2 number, since 2×40162313² = 3226022771019938, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (40162319) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1181228 + ... + 1181261.

It is an arithmetic number, because the mean of its divisors is an integer number (10631205).

Almost surely, 2^40162313 is an apocalyptic number.

It is an amenable number.

40162313 is a deficient number, since it is larger than the sum of its proper divisors (2362507).

40162313 is a wasteful number, since it uses less digits than its factorization.

40162313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2362506.

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 40162313 is about 6337.3742985561. The cubic root of 40162313 is about 342.4571505881.

Adding to 40162313 its reverse (31326104), we get a palindrome (71488417).

The spelling of 40162313 in words is "forty million, one hundred sixty-two thousand, three hundred thirteen".