131301949 has 2 divisors, whose sum is σ = 131301950. Its totient is φ = 131301948.

The previous prime is 131301943. The next prime is 131301971. The reversal of 131301949 is 949103131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 130370724 + 931225 = 11418^2 + 965^2 .

It is a cyclic number.

It is not a de Polignac number, because 131301949 - 2³ = 131301941 is a prime.

It is a super-2 number, since 2×131301949² = 34480403622397202, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 131301949.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131301941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65650974 + 65650975.

It is an arithmetic number, because the mean of its divisors is an integer number (65650975).

Almost surely, 2^131301949 is an apocalyptic number.

It is an amenable number.

131301949 is a deficient number, since it is larger than the sum of its proper divisors (1).

131301949 is an equidigital number, since it uses as much as digits as its factorization.

131301949 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2916, while the sum is 31.

The square root of 131301949 is about 11458.7062533255. The cubic root of 131301949 is about 508.2652181657.

The spelling of 131301949 in words is "one hundred thirty-one million, three hundred one thousand, nine hundred forty-nine".