1199255431 has 16 divisors (see below), whose sum is σ = 1340563968. Its totient is φ = 1063483200.

The previous prime is 1199255413. The next prime is 1199255437. The reversal of 1199255431 is 1345529911.

It is a cyclic number.

It is not a de Polignac number, because 1199255431 - 2²⁹ = 662384519 is a prime.

It is a super-2 number, since 2×1199255431² = 2876427177565991522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1199255437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 158116 + ... + 165526.

It is an arithmetic number, because the mean of its divisors is an integer number (83785248).

Almost surely, 2^1199255431 is an apocalyptic number.

1199255431 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1199255431 is a deficient number, since it is larger than the sum of its proper divisors (141308537).

1199255431 is a wasteful number, since it uses less digits than its factorization.

1199255431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7782.

The product of its digits is 48600, while the sum is 40.

The square root of 1199255431 is about 34630.2675559979. The cubic root of 1199255431 is about 1062.4387396468.

The spelling of 1199255431 in words is "one billion, one hundred ninety-nine million, two hundred fifty-five thousand, four hundred thirty-one".