1031120200 has 48 divisors (see below), whose sum is σ = 2615301360. Its totient is φ = 374952000.

The previous prime is 1031120191. The next prime is 1031120203. The reversal of 1031120200 is 20211301.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is not an unprimeable number, because it can be changed into a prime (1031120203) 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, 232146 + ... + 236545.

It is an arithmetic number, because the mean of its divisors is an integer number (54485445).

Almost surely, 2^1031120200 is an apocalyptic number.

1031120200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1031120200 is an abundant number, since it is smaller than the sum of its proper divisors (1584181160).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1031120200 is a wasteful number, since it uses less digits than its factorization.

1031120200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 468718 (or 468709 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 10.

The square root of 1031120200 is about 32111.0603998062. The cubic root of 1031120200 is about 1010.2676152595.

Adding to 1031120200 its reverse (20211301), we get a palindrome (1051331501).

The spelling of 1031120200 in words is "one billion, thirty-one million, one hundred twenty thousand, two hundred".