131361123 has 4 divisors (see below), whose sum is σ = 175148168. Its totient is φ = 87574080.

The previous prime is 131361067. The next prime is 131361127. The reversal of 131361123 is 321163131.

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

It is not a de Polignac number, because 131361123 - 2⁶ = 131361059 is a prime.

It is a super-2 number, since 2×131361123² = 34511489271642258, 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 131361123.

It is not an unprimeable number, because it can be changed into a prime (131361127) 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, 21893518 + ... + 21893523.

It is an arithmetic number, because the mean of its divisors is an integer number (43787042).

Almost surely, 2^131361123 is an apocalyptic number.

131361123 is a deficient number, since it is larger than the sum of its proper divisors (43787045).

131361123 is an equidigital number, since it uses as much as digits as its factorization.

131361123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43787044.

The product of its digits is 324, while the sum is 21.

The square root of 131361123 is about 11461.2880166236. The cubic root of 131361123 is about 508.3415601882.

The spelling of 131361123 in words is "one hundred thirty-one million, three hundred sixty-one thousand, one hundred twenty-three".