1249385331 has 8 divisors (see below), whose sum is σ = 1666036944. Its totient is φ = 832828640.

The previous prime is 1249385321. The next prime is 1249385341. The reversal of 1249385331 is 1335839421.

It is a happy number.

1249385331 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (1249385321) and next prime (1249385341).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1249385331 - 2¹³ = 1249377139 is a prime.

It is a super-2 number, since 2×1249385331² = 3121927410635959122, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1249385331.

It is not an unprimeable number, because it can be changed into a prime (1249385311) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16945 + ... + 52781.

It is an arithmetic number, because the mean of its divisors is an integer number (208254618).

Almost surely, 2^1249385331 is an apocalyptic number.

1249385331 is a deficient number, since it is larger than the sum of its proper divisors (416651613).

1249385331 is a wasteful number, since it uses less digits than its factorization.

1249385331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47461.

The product of its digits is 77760, while the sum is 39.

The square root of 1249385331 is about 35346.6452580722. The cubic root of 1249385331 is about 1077.0407475042.

The spelling of 1249385331 in words is "one billion, two hundred forty-nine million, three hundred eighty-five thousand, three hundred thirty-one".