1231634330 has 8 divisors (see below), whose sum is σ = 2216941812. Its totient is φ = 492653728.

The previous prime is 1231634303. The next prime is 1231634363. The reversal of 1231634330 is 334361321.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1221013249 + 10621081 = 34943^2 + 3259^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 1231634330.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 61581707 + ... + 61581726.

Almost surely, 2^1231634330 is an apocalyptic number.

1231634330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1231634330 is a deficient number, since it is larger than the sum of its proper divisors (985307482).

1231634330 is a wasteful number, since it uses less digits than its factorization.

1231634330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123163440.

The product of its (nonzero) digits is 3888, while the sum is 26.

The square root of 1231634330 is about 35094.6481674913. The cubic root of 1231634330 is about 1071.9156094229.

Adding to 1231634330 its reverse (334361321), we get a palindrome (1565995651).

The spelling of 1231634330 in words is "one billion, two hundred thirty-one million, six hundred thirty-four thousand, three hundred thirty".