1231350204 has 72 divisors (see below), whose sum is σ = 3376848720. Its totient is φ = 348171264.

The previous prime is 1231350181. The next prime is 1231350277. The reversal of 1231350204 is 4020531321.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

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, 46242 + ... + 67830.

Almost surely, 2^1231350204 is an apocalyptic number.

1231350204 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1231350204, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1688424360).

1231350204 is an abundant number, since it is smaller than the sum of its proper divisors (2145498516).

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

1231350204 is a wasteful number, since it uses less digits than its factorization.

1231350204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21707 (or 21698 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 1231350204 is about 35090.5999378751. The cubic root of 1231350204 is about 1071.8331762662.

Adding to 1231350204 its reverse (4020531321), we get a palindrome (5251881525).

The spelling of 1231350204 in words is "one billion, two hundred thirty-one million, three hundred fifty thousand, two hundred four".