540993931 has 2 divisors, whose sum is σ = 540993932. Its totient is φ = 540993930.

The previous prime is 540993919. The next prime is 540993953. The reversal of 540993931 is 139399045.

540993931 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 540993931 - 2¹⁵ = 540961163 is a prime.

It is a super-2 number, since 2×540993931² = 585348866757665522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (540993031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 270496965 + 270496966.

It is an arithmetic number, because the mean of its divisors is an integer number (270496966).

Almost surely, 2^540993931 is an apocalyptic number.

540993931 is a deficient number, since it is larger than the sum of its proper divisors (1).

540993931 is an equidigital number, since it uses as much as digits as its factorization.

540993931 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 131220, while the sum is 43.

The square root of 540993931 is about 23259.2762355152. The cubic root of 540993931 is about 814.8245979815.

The spelling of 540993931 in words is "five hundred forty million, nine hundred ninety-three thousand, nine hundred thirty-one".