1150220031 has 4 divisors (see below), whose sum is σ = 1533626712. Its totient is φ = 766813352.

The previous prime is 1150220003. The next prime is 1150220033. The reversal of 1150220031 is 1300220511.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1300220511 = 3 ⋅433406837.

It is a cyclic number.

It is not a de Polignac number, because 1150220031 - 2⁹ = 1150219519 is a prime.

It is a super-2 number, since 2×1150220031² = 2646012239427281922, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1150220033) 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, 191703336 + ... + 191703341.

It is an arithmetic number, because the mean of its divisors is an integer number (383406678).

Almost surely, 2^1150220031 is an apocalyptic number.

1150220031 is a deficient number, since it is larger than the sum of its proper divisors (383406681).

1150220031 is an equidigital number, since it uses as much as digits as its factorization.

1150220031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 383406680.

The product of its (nonzero) digits is 60, while the sum is 15.

The square root of 1150220031 is about 33914.8939405684. The cubic root of 1150220031 is about 1047.7563675135.

Adding to 1150220031 its reverse (1300220511), we get a palindrome (2450440542).

The spelling of 1150220031 in words is "one billion, one hundred fifty million, two hundred twenty thousand, thirty-one".