40915331 has 2 divisors, whose sum is σ = 40915332. Its totient is φ = 40915330.

The previous prime is 40915307. The next prime is 40915337. The reversal of 40915331 is 13351904.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40915331 - 2¹⁸ = 40653187 is a prime.

It is a super-2 number, since 2×40915331² = 3348128621679122, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 40915331.

It is not a weakly prime, because it can be changed into another prime (40915337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20457665 + 20457666.

It is an arithmetic number, because the mean of its divisors is an integer number (20457666).

Almost surely, 2^40915331 is an apocalyptic number.

40915331 is a deficient number, since it is larger than the sum of its proper divisors (1).

40915331 is an equidigital number, since it uses as much as digits as its factorization.

40915331 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1620, while the sum is 26.

The square root of 40915331 is about 6396.5092824133. The cubic root of 40915331 is about 344.5841969572.

The spelling of 40915331 in words is "forty million, nine hundred fifteen thousand, three hundred thirty-one".