1231203122 has 16 divisors (see below), whose sum is σ = 1878286752. Its totient is φ = 605146080.

The previous prime is 1231203079. The next prime is 1231203131. The reversal of 1231203122 is 2213021321.

It is a super-2 number, since 2×1231203122² = 3031722255245093768, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1231203122.

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, 56438 + ... + 75150.

It is an arithmetic number, because the mean of its divisors is an integer number (117392922).

Almost surely, 2^1231203122 is an apocalyptic number.

1231203122 is a deficient number, since it is larger than the sum of its proper divisors (647083630).

1231203122 is a wasteful number, since it uses less digits than its factorization.

1231203122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19273.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 1231203122 is about 35088.5041288454. The cubic root of 1231203122 is about 1071.7904985498.

Adding to 1231203122 its reverse (2213021321), we get a palindrome (3444224443).

The spelling of 1231203122 in words is "one billion, two hundred thirty-one million, two hundred three thousand, one hundred twenty-two".