1231101030 has 32 divisors (see below), whose sum is σ = 2964747744. Its totient is φ = 327170816.

The previous prime is 1231100999. The next prime is 1231101041. The reversal of 1231101030 is 301011321.

It is a junction number, because it is equal to n+sod(n) for n = 1231100997 and 1231101015.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 61239 + ... + 78818.

It is an arithmetic number, because the mean of its divisors is an integer number (92648367).

Almost surely, 2^1231101030 is an apocalyptic number.

1231101030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1231101030 is an abundant number, since it is smaller than the sum of its proper divisors (1733646714).

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

1231101030 is a wasteful number, since it uses less digits than its factorization.

1231101030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140360.

The product of its (nonzero) digits is 18, while the sum is 12.

The square root of 1231101030 is about 35087.0493202264. The cubic root of 1231101030 is about 1071.7608732566.

Adding to 1231101030 its reverse (301011321), we get a palindrome (1532112351).

The spelling of 1231101030 in words is "one billion, two hundred thirty-one million, one hundred one thousand, thirty".