1231260319 has 2 divisors, whose sum is σ = 1231260320. Its totient is φ = 1231260318.

The previous prime is 1231260293. The next prime is 1231260341. The reversal of 1231260319 is 9130621321.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1231260319 - 2¹⁷ = 1231129247 is a prime.

It is a super-2 number, since 2×1231260319² = 3032003946287963522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1231260419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 615630159 + 615630160.

It is an arithmetic number, because the mean of its divisors is an integer number (615630160).

Almost surely, 2^1231260319 is an apocalyptic number.

1231260319 is a deficient number, since it is larger than the sum of its proper divisors (1).

1231260319 is an equidigital number, since it uses as much as digits as its factorization.

1231260319 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1944, while the sum is 28.

The square root of 1231260319 is about 35089.3191583992. The cubic root of 1231260319 is about 1071.8070953920.

The spelling of 1231260319 in words is "one billion, two hundred thirty-one million, two hundred sixty thousand, three hundred nineteen".