1249452311 has 2 divisors, whose sum is σ = 1249452312. Its totient is φ = 1249452310.

The previous prime is 1249452307. The next prime is 1249452317. The reversal of 1249452311 is 1132549421.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1249452311 - 2² = 1249452307 is a prime.

It is a super-2 number, since 2×1249452311² = 3122262154926481442, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1249452317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 624726155 + 624726156.

It is an arithmetic number, because the mean of its divisors is an integer number (624726156).

Almost surely, 2^1249452311 is an apocalyptic number.

1249452311 is a deficient number, since it is larger than the sum of its proper divisors (1).

1249452311 is an equidigital number, since it uses as much as digits as its factorization.

1249452311 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8640, while the sum is 32.

The square root of 1249452311 is about 35347.5927185997. The cubic root of 1249452311 is about 1077.0599940084.

The spelling of 1249452311 in words is "one billion, two hundred forty-nine million, four hundred fifty-two thousand, three hundred eleven".