131370143 has 4 divisors (see below), whose sum is σ = 133169808. Its totient is φ = 129570480.

The previous prime is 131370139. The next prime is 131370163. The reversal of 131370143 is 341073131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 341073131 = 7 ⋅48724733.

It is a cyclic number.

It is not a de Polignac number, because 131370143 - 2² = 131370139 is a prime.

It is a super-2 number, since 2×131370143² = 34516228943680898, 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 (131370163) 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, 899723 + ... + 899868.

It is an arithmetic number, because the mean of its divisors is an integer number (33292452).

Almost surely, 2^131370143 is an apocalyptic number.

131370143 is a deficient number, since it is larger than the sum of its proper divisors (1799665).

131370143 is an equidigital number, since it uses as much as digits as its factorization.

131370143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1799664.

The product of its (nonzero) digits is 756, while the sum is 23.

The square root of 131370143 is about 11461.6815084001. The cubic root of 131370143 is about 508.3531951271.

The spelling of 131370143 in words is "one hundred thirty-one million, three hundred seventy thousand, one hundred forty-three".