1229431000 has 64 divisors (see below), whose sum is σ = 3287868480. Its totient is φ = 421516800.

The previous prime is 1229430971. The next prime is 1229431003. The reversal of 1229431000 is 1349221.

It is a super-2 number, since 2×1229431000² = 3023001167522000000, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1229431003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 80817 + ... + 94816.

It is an arithmetic number, because the mean of its divisors is an integer number (51372945).

Almost surely, 2^1229431000 is an apocalyptic number.

1229431000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1229431000 is an abundant number, since it is smaller than the sum of its proper divisors (2058437480).

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

1229431000 is a wasteful number, since it uses less digits than its factorization.

1229431000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 175661 (or 175647 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 1229431000 is about 35063.2428620058. The cubic root of 1229431000 is about 1071.2760273832.

The spelling of 1229431000 in words is "one billion, two hundred twenty-nine million, four hundred thirty-one thousand".