1011231130 has 48 divisors (see below), whose sum is σ = 2280285000. Its totient is φ = 320035968.

The previous prime is 1011231103. The next prime is 1011231157. The reversal of 1011231130 is 311321101.

It is an interprime number because it is at equal distance from previous prime (1011231103) and next prime (1011231157).

It can be written as a sum of positive squares in 4 ways, for example, as 285305881 + 725925249 = 16891^2 + 26943^2 .

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a self number, because there is not a number n which added to its sum of digits gives 1011231130.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 73005 + ... + 85744.

Almost surely, 2^1011231130 is an apocalyptic number.

1011231130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1011231130 is an abundant number, since it is smaller than the sum of its proper divisors (1269053870).

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

1011231130 is a wasteful number, since it uses less digits than its factorization.

1011231130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158783 (or 158776 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 13.

The square root of 1011231130 is about 31799.8605342854. The cubic root of 1011231130 is about 1003.7297814351.

Adding to 1011231130 its reverse (311321101), we get a palindrome (1322552231).

The spelling of 1011231130 in words is "one billion, eleven million, two hundred thirty-one thousand, one hundred thirty".