1231203210 has 32 divisors (see below), whose sum is σ = 2955932352. Its totient is φ = 328204800.

The previous prime is 1231203137. The next prime is 1231203217. The reversal of 1231203210 is 123021321.

It is a super-2 number, since 2×1231203210² = 3031722688628608200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1231203210.

It is not an unprimeable number, because it can be changed into a prime (1231203217) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 110202 + ... + 120858.

It is an arithmetic number, because the mean of its divisors is an integer number (92372886).

Almost surely, 2^1231203210 is an apocalyptic number.

1231203210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1231203210 is an abundant number, since it is smaller than the sum of its proper divisors (1724729142).

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

1231203210 is a wasteful number, since it uses less digits than its factorization.

1231203210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14518.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 1231203210 is about 35088.5053828173. The cubic root of 1231203210 is about 1071.7905240851.

Adding to 1231203210 its reverse (123021321), we get a palindrome (1354224531).

The spelling of 1231203210 in words is "one billion, two hundred thirty-one million, two hundred three thousand, two hundred ten".