131430437 has 2 divisors, whose sum is σ = 131430438. Its totient is φ = 131430436.

The previous prime is 131430427. The next prime is 131430457. The reversal of 131430437 is 734034131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 90649441 + 40780996 = 9521^2 + 6386^2 .

It is a cyclic number.

It is not a de Polignac number, because 131430437 - 2⁸ = 131430181 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131430427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65715218 + 65715219.

It is an arithmetic number, because the mean of its divisors is an integer number (65715219).

Almost surely, 2^131430437 is an apocalyptic number.

It is an amenable number.

131430437 is a deficient number, since it is larger than the sum of its proper divisors (1).

131430437 is an equidigital number, since it uses as much as digits as its factorization.

131430437 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3024, while the sum is 26.

The square root of 131430437 is about 11464.3114490143. The cubic root of 131430437 is about 508.4309549561.

Adding to 131430437 its reverse (734034131), we get a palindrome (865464568).

The spelling of 131430437 in words is "one hundred thirty-one million, four hundred thirty thousand, four hundred thirty-seven".