1232315837 has 2 divisors, whose sum is σ = 1232315838. Its totient is φ = 1232315836.

The previous prime is 1232315809. The next prime is 1232315869. The reversal of 1232315837 is 7385132321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1150973476 + 81342361 = 33926^2 + 9019^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1232315837 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1232315797 and 1232315806.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1232315807) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 616157918 + 616157919.

It is an arithmetic number, because the mean of its divisors is an integer number (616157919).

Almost surely, 2^1232315837 is an apocalyptic number.

It is an amenable number.

1232315837 is a deficient number, since it is larger than the sum of its proper divisors (1).

1232315837 is an equidigital number, since it uses as much as digits as its factorization.

1232315837 is an evil number, because the sum of its binary digits is even.

The product of its digits is 30240, while the sum is 35.

The square root of 1232315837 is about 35104.3563820788. The cubic root of 1232315837 is about 1072.1132826213.

The spelling of 1232315837 in words is "one billion, two hundred thirty-two million, three hundred fifteen thousand, eight hundred thirty-seven".