131838697 has 2 divisors, whose sum is σ = 131838698. Its totient is φ = 131838696.

The previous prime is 131838677. The next prime is 131838743. The reversal of 131838697 is 796838131.

It is an a-pointer prime, because the next prime (131838743) can be obtained adding 131838697 to its sum of digits (46).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 74321641 + 57517056 = 8621^2 + 7584^2 .

It is a cyclic number.

It is not a de Polignac number, because 131838697 - 2¹⁵ = 131805929 is a prime.

It is not a weakly prime, because it can be changed into another prime (131838607) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65919348 + 65919349.

It is an arithmetic number, because the mean of its divisors is an integer number (65919349).

Almost surely, 2^131838697 is an apocalyptic number.

It is an amenable number.

131838697 is a deficient number, since it is larger than the sum of its proper divisors (1).

131838697 is an equidigital number, since it uses as much as digits as its factorization.

131838697 is an evil number, because the sum of its binary digits is even.

The product of its digits is 217728, while the sum is 46.

The square root of 131838697 is about 11482.1033351908. The cubic root of 131838697 is about 508.9568541080.

The spelling of 131838697 in words is "one hundred thirty-one million, eight hundred thirty-eight thousand, six hundred ninety-seven".