131401239 has 8 divisors (see below), whose sum is σ = 175409520. Its totient is φ = 87496896.

The previous prime is 131401229. The next prime is 131401267. The reversal of 131401239 is 932104131.

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

It is not a de Polignac number, because 131401239 - 2⁴ = 131401223 is a prime.

It is a super-2 number, since 2×131401239² = 34532571221470242, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131401229) 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, 22984 + ... + 28125.

It is an arithmetic number, because the mean of its divisors is an integer number (21926190).

Almost surely, 2^131401239 is an apocalyptic number.

131401239 is a deficient number, since it is larger than the sum of its proper divisors (44008281).

131401239 is an equidigital number, since it uses as much as digits as its factorization.

131401239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51969.

The product of its (nonzero) digits is 648, while the sum is 24.

The square root of 131401239 is about 11463.0379481183. The cubic root of 131401239 is about 508.3933019162.

The spelling of 131401239 in words is "one hundred thirty-one million, four hundred one thousand, two hundred thirty-nine".