131651023 has 4 divisors (see below), whose sum is σ = 150458320. Its totient is φ = 112843728.

The previous prime is 131650951. The next prime is 131651027. The reversal of 131651023 is 320156131.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 320156131 = 4441 ⋅72091.

It is a cyclic number.

It is not a de Polignac number, because 131651023 - 2¹⁷ = 131519951 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 131650985 and 131651003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131651027) 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, 9403638 + ... + 9403651.

It is an arithmetic number, because the mean of its divisors is an integer number (37614580).

Almost surely, 2^131651023 is an apocalyptic number.

131651023 is a deficient number, since it is larger than the sum of its proper divisors (18807297).

131651023 is an equidigital number, since it uses as much as digits as its factorization.

131651023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18807296.

The product of its (nonzero) digits is 540, while the sum is 22.

The square root of 131651023 is about 11473.9279673528. The cubic root of 131651023 is about 508.7152373183.

The spelling of 131651023 in words is "one hundred thirty-one million, six hundred fifty-one thousand, twenty-three".