131456381 has 8 divisors (see below), whose sum is σ = 150899520. Its totient is φ = 112179168.

The previous prime is 131456357. The next prime is 131456401. The reversal of 131456381 is 183654131.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131456381 is a prime.

It is a super-2 number, since 2×131456381² = 34561560211234322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131456081) 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, 39776 + ... + 42953.

It is an arithmetic number, because the mean of its divisors is an integer number (18862440).

Almost surely, 2^131456381 is an apocalyptic number.

It is an amenable number.

131456381 is a deficient number, since it is larger than the sum of its proper divisors (19443139).

131456381 is an equidigital number, since it uses as much as digits as its factorization.

131456381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82963.

The product of its digits is 8640, while the sum is 32.

The square root of 131456381 is about 11465.4429046592. The cubic root of 131456381 is about 508.4644070370.

The spelling of 131456381 in words is "one hundred thirty-one million, four hundred fifty-six thousand, three hundred eighty-one".