1213432304 has 40 divisors (see below), whose sum is σ = 2699672448. Its totient is φ = 517567680.

The previous prime is 1213432303. The next prime is 1213432343. The reversal of 1213432304 is 4032343121.

It is a self number, because there is not a number n which added to its sum of digits gives 1213432304.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213432301) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2042 + ... + 49305.

Almost surely, 2^1213432304 is an apocalyptic number.

1213432304 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 1213432304, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1349836224).

1213432304 is an abundant number, since it is smaller than the sum of its proper divisors (1486240144).

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

1213432304 is a wasteful number, since it uses less digits than its factorization.

1213432304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51573 (or 51567 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 23.

The square root of 1213432304 is about 34834.3552258399. The cubic root of 1213432304 is about 1066.6088532902.

Adding to 1213432304 its reverse (4032343121), we get a palindrome (5245775425).

The spelling of 1213432304 in words is "one billion, two hundred thirteen million, four hundred thirty-two thousand, three hundred four".