131291158 has 4 divisors (see below), whose sum is σ = 196936740. Its totient is φ = 65645578.

The previous prime is 131291137. The next prime is 131291179. The reversal of 131291158 is 851192131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 851192131 = 577 ⋅1475203.

It is an interprime number because it is at equal distance from previous prime (131291137) and next prime (131291179).

It is a super-3 number, since 3×131291158³ (a number of 25 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32822788 + ... + 32822791.

It is an arithmetic number, because the mean of its divisors is an integer number (49234185).

Almost surely, 2^131291158 is an apocalyptic number.

131291158 is a deficient number, since it is larger than the sum of its proper divisors (65645582).

131291158 is an equidigital number, since it uses as much as digits as its factorization.

131291158 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65645581.

The product of its digits is 2160, while the sum is 31.

The square root of 131291158 is about 11458.2353789752. The cubic root of 131291158 is about 508.2512939240.

The spelling of 131291158 in words is "one hundred thirty-one million, two hundred ninety-one thousand, one hundred fifty-eight".