1231201330 has 48 divisors (see below), whose sum is σ = 2350373760. Its totient is φ = 464282784.

The previous prime is 1231201297. The next prime is 1231201357. The reversal of 1231201330 is 331021321.

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, 862077 + ... + 863503.

It is an arithmetic number, because the mean of its divisors is an integer number (48966120).

Almost surely, 2^1231201330 is an apocalyptic number.

1231201330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1231201330 is a deficient number, since it is larger than the sum of its proper divisors (1119172430).

1231201330 is a wasteful number, since it uses less digits than its factorization.

1231201330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1711 (or 1692 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 1231201330 is about 35088.4785934073. The cubic root of 1231201330 is about 1071.7899785572.

Adding to 1231201330 its reverse (331021321), we get a palindrome (1562222651).

Subtracting from 1231201330 its reverse (331021321), we obtain a square (900180009 = 30003²).

The spelling of 1231201330 in words is "one billion, two hundred thirty-one million, two hundred one thousand, three hundred thirty".