1231414817 has 2 divisors, whose sum is σ = 1231414818. Its totient is φ = 1231414816.

The previous prime is 1231414813. The next prime is 1231414831. The reversal of 1231414817 is 7184141321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1207979536 + 23435281 = 34756^2 + 4841^2 .

It is a cyclic number.

It is not a de Polignac number, because 1231414817 - 2² = 1231414813 is a prime.

It is not a weakly prime, because it can be changed into another prime (1231414813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 615707408 + 615707409.

It is an arithmetic number, because the mean of its divisors is an integer number (615707409).

Almost surely, 2^1231414817 is an apocalyptic number.

It is an amenable number.

1231414817 is a deficient number, since it is larger than the sum of its proper divisors (1).

1231414817 is an equidigital number, since it uses as much as digits as its factorization.

1231414817 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5376, while the sum is 32.

The square root of 1231414817 is about 35091.5205854634. The cubic root of 1231414817 is about 1071.8519234770.

The spelling of 1231414817 in words is "one billion, two hundred thirty-one million, four hundred fourteen thousand, eight hundred seventeen".