131451123 has 8 divisors (see below), whose sum is σ = 185578128. Its totient is φ = 82479104.

The previous prime is 131451097. The next prime is 131451137. The reversal of 131451123 is 321154131.

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

It is not a de Polignac number, because 131451123 - 2⁵ = 131451091 is a prime.

It is a super-2 number, since 2×131451123² = 34558795475922258, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 131451123.

It is not an unprimeable number, because it can be changed into a prime (131451143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1288686 + ... + 1288787.

It is an arithmetic number, because the mean of its divisors is an integer number (23197266).

Almost surely, 2^131451123 is an apocalyptic number.

131451123 is a deficient number, since it is larger than the sum of its proper divisors (54127005).

131451123 is a wasteful number, since it uses less digits than its factorization.

131451123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2577493.

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

The square root of 131451123 is about 11465.2136046390. The cubic root of 131451123 is about 508.4576277503.

The spelling of 131451123 in words is "one hundred thirty-one million, four hundred fifty-one thousand, one hundred twenty-three".