131951293 has 2 divisors, whose sum is σ = 131951294. Its totient is φ = 131951292.

The previous prime is 131951269. The next prime is 131951321. The reversal of 131951293 is 392159131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 115734564 + 16216729 = 10758^2 + 4027^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131951293 is a prime.

It is a super-2 number, since 2×131951293² = 34822287448743698, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131951203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65975646 + 65975647.

It is an arithmetic number, because the mean of its divisors is an integer number (65975647).

Almost surely, 2^131951293 is an apocalyptic number.

It is an amenable number.

131951293 is a deficient number, since it is larger than the sum of its proper divisors (1).

131951293 is an equidigital number, since it uses as much as digits as its factorization.

131951293 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7290, while the sum is 34.

The square root of 131951293 is about 11487.0053974045. The cubic root of 131951293 is about 509.1017033339.

The spelling of 131951293 in words is "one hundred thirty-one million, nine hundred fifty-one thousand, two hundred ninety-three".