104431031 has 4 divisors (see below), whose sum is σ = 104452200. Its totient is φ = 104409864.

The previous prime is 104431013. The next prime is 104431043. The reversal of 104431031 is 130134401.

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 104431031 - 2⁶ = 104430967 is a prime.

It is a super-2 number, since 2×104431031² = 21811680471445922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (104431081) 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, 1160 + ... + 14498.

It is an arithmetic number, because the mean of its divisors is an integer number (26113050).

Almost surely, 2^104431031 is an apocalyptic number.

104431031 is a deficient number, since it is larger than the sum of its proper divisors (21169).

104431031 is an equidigital number, since it uses as much as digits as its factorization.

104431031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21168.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 104431031 is about 10219.1502092884. The cubic root of 104431031 is about 470.9157203643.

Adding to 104431031 its reverse (130134401), we get a palindrome (234565432).

The spelling of 104431031 in words is "one hundred four million, four hundred thirty-one thousand, thirty-one".