131031149 has 8 divisors (see below), whose sum is σ = 132164760. Its totient is φ = 129902400.

The previous prime is 131031137. The next prime is 131031167. The reversal of 131031149 is 941130131.

It can be written as a sum of positive squares in 4 ways, for example, as 26112100 + 104919049 = 5110^2 + 10243^2 .

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 131031149 - 2⁴ = 131031133 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131031169) 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, 69479 + ... + 71339.

It is an arithmetic number, because the mean of its divisors is an integer number (16520595).

Almost surely, 2^131031149 is an apocalyptic number.

It is an amenable number.

131031149 is a deficient number, since it is larger than the sum of its proper divisors (1133611).

131031149 is a wasteful number, since it uses less digits than its factorization.

131031149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2431.

The product of its (nonzero) digits is 324, while the sum is 23.

The square root of 131031149 is about 11446.8838117629. The cubic root of 131031149 is about 507.9155585875.

The spelling of 131031149 in words is "one hundred thirty-one million, thirty-one thousand, one hundred forty-nine".