104156531 has 4 divisors (see below), whose sum is σ = 104544000. Its totient is φ = 103769064.

The previous prime is 104156527. The next prime is 104156539. The reversal of 104156531 is 135651401.

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

It is a cyclic number.

It is not a de Polignac number, because 104156531 - 2² = 104156527 is a prime.

It is a super-2 number, since 2×104156531² = 21697165899907922, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 104156531.

It is not an unprimeable number, because it can be changed into a prime (104156539) 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, 193331 + ... + 193868.

It is an arithmetic number, because the mean of its divisors is an integer number (26136000).

Almost surely, 2^104156531 is an apocalyptic number.

104156531 is a deficient number, since it is larger than the sum of its proper divisors (387469).

104156531 is an equidigital number, since it uses as much as digits as its factorization.

104156531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 387468.

The product of its (nonzero) digits is 1800, while the sum is 26.

The square root of 104156531 is about 10205.7107052865. The cubic root of 104156531 is about 470.5027531015.

The spelling of 104156531 in words is "one hundred four million, one hundred fifty-six thousand, five hundred thirty-one".