1200055031 has 12 divisors (see below), whose sum is σ = 1397617200. Its totient is φ = 1027414080.

The previous prime is 1200055009. The next prime is 1200055079. The reversal of 1200055031 is 1305500021.

It is not a de Polignac number, because 1200055031 - 2³⁰ = 126313207 is a prime.

It is a super-2 number, since 2×1200055031² = 2880264154856821922, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1200055081) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 29270 + ... + 57068.

It is an arithmetic number, because the mean of its divisors is an integer number (116468100).

Almost surely, 2^1200055031 is an apocalyptic number.

1200055031 is a deficient number, since it is larger than the sum of its proper divisors (197562169).

1200055031 is an equidigital number, since it uses as much as digits as its factorization.

1200055031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28694 (or 28687 counting only the distinct ones).

The product of its (nonzero) digits is 150, while the sum is 17.

The square root of 1200055031 is about 34641.8104463378. The cubic root of 1200055031 is about 1062.6748131464.

Adding to 1200055031 its reverse (1305500021), we get a palindrome (2505555052).

The spelling of 1200055031 in words is "one billion, two hundred million, fifty-five thousand, thirty-one".