1231331030 has 16 divisors (see below), whose sum is σ = 2216816640. Its totient is φ = 492438912.

The previous prime is 1231331027. The next prime is 1231331053. The reversal of 1231331030 is 301331321.

It is a super-2 number, since 2×1231331030² = 3032352210881721800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 72491 + ... + 87849.

It is an arithmetic number, because the mean of its divisors is an integer number (138551040).

Almost surely, 2^1231331030 is an apocalyptic number.

1231331030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1231331030 is a deficient number, since it is larger than the sum of its proper divisors (985485610).

1231331030 is a wasteful number, since it uses less digits than its factorization.

1231331030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23383.

The product of its (nonzero) digits is 162, while the sum is 17.

The square root of 1231331030 is about 35090.3267297413. The cubic root of 1231331030 is about 1071.8276128784.

Adding to 1231331030 its reverse (301331321), we get a palindrome (1532662351).

The spelling of 1231331030 in words is "one billion, two hundred thirty-one million, three hundred thirty-one thousand, thirty".