131620539 has 8 divisors (see below), whose sum is σ = 179228160. Its totient is φ = 85879976.

The previous prime is 131620523. The next prime is 131620591. The reversal of 131620539 is 935026131.

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

It is a cyclic number.

It is not a de Polignac number, because 131620539 - 2⁴ = 131620523 is a prime.

It is not an unprimeable number, because it can be changed into a prime (131620339) 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, 466599 + ... + 466880.

It is an arithmetic number, because the mean of its divisors is an integer number (22403520).

Almost surely, 2^131620539 is an apocalyptic number.

131620539 is a deficient number, since it is larger than the sum of its proper divisors (47607621).

131620539 is an equidigital number, since it uses as much as digits as its factorization.

131620539 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 933529.

The product of its (nonzero) digits is 4860, while the sum is 30.

The square root of 131620539 is about 11472.5994874745. The cubic root of 131620539 is about 508.6759696847.

The spelling of 131620539 in words is "one hundred thirty-one million, six hundred twenty thousand, five hundred thirty-nine".