58161931 has 4 divisors (see below), whose sum is σ = 58177312. Its totient is φ = 58146552.

The previous prime is 58161919. The next prime is 58161941. The reversal of 58161931 is 13916185.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 58161931 - 2¹¹ = 58159883 is a prime.

It is a super-2 number, since 2×58161931² = 6765620435297522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (58161941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2365 + ... + 11041.

It is an arithmetic number, because the mean of its divisors is an integer number (14544328).

Almost surely, 2^58161931 is an apocalyptic number.

58161931 is a deficient number, since it is larger than the sum of its proper divisors (15381).

58161931 is an equidigital number, since it uses as much as digits as its factorization.

58161931 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15380.

The product of its digits is 6480, while the sum is 34.

The square root of 58161931 is about 7626.3969867822. The cubic root of 58161931 is about 387.4475677930.

The spelling of 58161931 in words is "fifty-eight million, one hundred sixty-one thousand, nine hundred thirty-one".