131123451 has 8 divisors (see below), whose sum is σ = 174900544. Its totient is φ = 87381000.

The previous prime is 131123441. The next prime is 131123479. The reversal of 131123451 is 154321131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 131123451 - 2⁶ = 131123387 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131123401) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2076 + ... + 16326.

It is an arithmetic number, because the mean of its divisors is an integer number (21862568).

Almost surely, 2^131123451 is an apocalyptic number.

131123451 is a deficient number, since it is larger than the sum of its proper divisors (43777093).

131123451 is a wasteful number, since it uses less digits than its factorization.

131123451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17321.

The product of its digits is 360, while the sum is 21.

The square root of 131123451 is about 11450.9148542813. The cubic root of 131123451 is about 508.0347938948.

Adding to 131123451 its reverse (154321131), we get a palindrome (285444582).

The spelling of 131123451 in words is "one hundred thirty-one million, one hundred twenty-three thousand, four hundred fifty-one".