1152255931 has 4 divisors (see below), whose sum is σ = 1212901000. Its totient is φ = 1091610864.

The previous prime is 1152255917. The next prime is 1152255959. The reversal of 1152255931 is 1395522511.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1395522511 = 233 ⋅5989367.

It is a cyclic number.

It is not a de Polignac number, because 1152255931 - 2¹³ = 1152247739 is a prime.

It is a super-2 number, since 2×1152255931² = 2655387461049353522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1152255331) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30322506 + ... + 30322543.

It is an arithmetic number, because the mean of its divisors is an integer number (303225250).

Almost surely, 2^1152255931 is an apocalyptic number.

1152255931 is a deficient number, since it is larger than the sum of its proper divisors (60645069).

1152255931 is an equidigital number, since it uses as much as digits as its factorization.

1152255931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60645068.

The product of its digits is 13500, while the sum is 34.

The square root of 1152255931 is about 33944.8955072777. The cubic root of 1152255931 is about 1048.3741826027.

The spelling of 1152255931 in words is "one billion, one hundred fifty-two million, two hundred fifty-five thousand, nine hundred thirty-one".