131270389 has 4 divisors (see below), whose sum is σ = 134063424. Its totient is φ = 128477356.

The previous prime is 131270387. The next prime is 131270423. The reversal of 131270389 is 983072131.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 131270389 - 2¹ = 131270387 is a prime.

It is a super-2 number, since 2×131270389² = 34463830056422642, 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 (131270383) 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, 1396447 + ... + 1396540.

It is an arithmetic number, because the mean of its divisors is an integer number (33515856).

Almost surely, 2^131270389 is an apocalyptic number.

It is an amenable number.

131270389 is a deficient number, since it is larger than the sum of its proper divisors (2793035).

131270389 is an equidigital number, since it uses as much as digits as its factorization.

131270389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2793034.

The product of its (nonzero) digits is 9072, while the sum is 34.

The square root of 131270389 is about 11457.3290517467. The cubic root of 131270389 is about 508.2244923532.

The spelling of 131270389 in words is "one hundred thirty-one million, two hundred seventy thousand, three hundred eighty-nine".