131234437 has 2 divisors, whose sum is σ = 131234438. Its totient is φ = 131234436.

The previous prime is 131234423. The next prime is 131234443. The reversal of 131234437 is 734432131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 130165281 + 1069156 = 11409^2 + 1034^2 .

It is a cyclic number.

It is not a de Polignac number, because 131234437 - 2¹¹ = 131232389 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131234417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65617218 + 65617219.

It is an arithmetic number, because the mean of its divisors is an integer number (65617219).

Almost surely, 2^131234437 is an apocalyptic number.

It is an amenable number.

131234437 is a deficient number, since it is larger than the sum of its proper divisors (1).

131234437 is an equidigital number, since it uses as much as digits as its factorization.

131234437 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6048, while the sum is 28.

The square root of 131234437 is about 11455.7599922484. The cubic root of 131234437 is about 508.1780910401.

Adding to 131234437 its reverse (734432131), we get a palindrome (865666568).

The spelling of 131234437 in words is "one hundred thirty-one million, two hundred thirty-four thousand, four hundred thirty-seven".