123495131 has 4 divisors (see below), whose sum is σ = 123538200. Its totient is φ = 123452064.

The previous prime is 123495121. The next prime is 123495139. The reversal of 123495131 is 131594321.

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 123495131 - 2⁶ = 123495067 is a prime.

It is a super-2 number, since 2×123495131² = 30502094761414322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 123495094 and 123495103.

It is not an unprimeable number, because it can be changed into a prime (123495139) 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, 16901 + ... + 23078.

It is an arithmetic number, because the mean of its divisors is an integer number (30884550).

Almost surely, 2^123495131 is an apocalyptic number.

123495131 is a deficient number, since it is larger than the sum of its proper divisors (43069).

123495131 is an equidigital number, since it uses as much as digits as its factorization.

123495131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43068.

The product of its digits is 3240, while the sum is 29.

The square root of 123495131 is about 11112.8363166205. The cubic root of 123495131 is about 497.9854016892.

The spelling of 123495131 in words is "one hundred twenty-three million, four hundred ninety-five thousand, one hundred thirty-one".