1249148311 has 2 divisors, whose sum is σ = 1249148312. Its totient is φ = 1249148310.

The previous prime is 1249148269. The next prime is 1249148347. The reversal of 1249148311 is 1138419421.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1249148311 - 2²¹ = 1247051159 is a prime.

It is a super-3 number, since 3×1249148311³ (a number of 28 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1249148111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 624574155 + 624574156.

It is an arithmetic number, because the mean of its divisors is an integer number (624574156).

Almost surely, 2^1249148311 is an apocalyptic number.

1249148311 is a deficient number, since it is larger than the sum of its proper divisors (1).

1249148311 is an equidigital number, since it uses as much as digits as its factorization.

1249148311 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6912, while the sum is 34.

The square root of 1249148311 is about 35343.2923056130. The cubic root of 1249148311 is about 1076.9726349861.

It can be divided in two parts, 124914 and 8311, that added together give a square (133225 = 365²).

The spelling of 1249148311 in words is "one billion, two hundred forty-nine million, one hundred forty-eight thousand, three hundred eleven".