1231413049 has 2 divisors, whose sum is σ = 1231413050. Its totient is φ = 1231413048.

The previous prime is 1231413041. The next prime is 1231413067. The reversal of 1231413049 is 9403141321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1136701225 + 94711824 = 33715^2 + 9732^2 .

It is a cyclic number.

It is not a de Polignac number, because 1231413049 - 2³ = 1231413041 is a prime.

It is not a weakly prime, because it can be changed into another prime (1231413041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 615706524 + 615706525.

It is an arithmetic number, because the mean of its divisors is an integer number (615706525).

Almost surely, 2^1231413049 is an apocalyptic number.

It is an amenable number.

1231413049 is a deficient number, since it is larger than the sum of its proper divisors (1).

1231413049 is an equidigital number, since it uses as much as digits as its factorization.

1231413049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 1231413049 is about 35091.4953941835. The cubic root of 1231413049 is about 1071.8514105074.

The spelling of 1231413049 in words is "one billion, two hundred thirty-one million, four hundred thirteen thousand, forty-nine".