1031000120 has 32 divisors (see below), whose sum is σ = 2320935120. Its totient is φ = 412189440.

The previous prime is 1031000107. The next prime is 1031000123. The reversal of 1031000120 is 210001301.

It is a super-2 number, since 2×1031000120² = 2125922494880028800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (8).

It is a junction number, because it is equal to n+sod(n) for n = 1031000098 and 1031000107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1031000123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 90335 + ... + 101105.

Almost surely, 2^1031000120 is an apocalyptic number.

1031000120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1031000120 is an abundant number, since it is smaller than the sum of its proper divisors (1289935000).

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

1031000120 is a wasteful number, since it uses less digits than its factorization.

1031000120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13175 (or 13171 counting only the distinct ones).

The product of its (nonzero) digits is 6, while the sum is 8.

The square root of 1031000120 is about 32109.1905846286. The cubic root of 1031000120 is about 1010.2283965390.

Adding to 1031000120 its reverse (210001301), we get a palindrome (1241001421).

The spelling of 1031000120 in words is "one billion, thirty-one million, one hundred twenty", and thus it is an aban number.