131097023 has 4 divisors (see below), whose sum is σ = 135617640. Its totient is φ = 126576408.

The previous prime is 131097007. The next prime is 131097101. The reversal of 131097023 is 320790131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 320790131 = 23 ⋅13947397.

It is a cyclic number.

It is not a de Polignac number, because 131097023 - 2⁴ = 131097007 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 131096983 and 131097001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131097223) 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, 2260265 + ... + 2260322.

It is an arithmetic number, because the mean of its divisors is an integer number (33904410).

Almost surely, 2^131097023 is an apocalyptic number.

131097023 is a deficient number, since it is larger than the sum of its proper divisors (4520617).

131097023 is an equidigital number, since it uses as much as digits as its factorization.

131097023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4520616.

The product of its (nonzero) digits is 1134, while the sum is 26.

The square root of 131097023 is about 11449.7608271963. The cubic root of 131097023 is about 508.0006600421. Note that the first 3 decimals are identical.

The spelling of 131097023 in words is "one hundred thirty-one million, ninety-seven thousand, twenty-three".