1229313550 has 12 divisors (see below), whose sum is σ = 2286523296. Its totient is φ = 491725400.

The previous prime is 1229313517. The next prime is 1229313551. The reversal of 1229313550 is 553139221.

It is a super-2 number, since 2×1229313550² = 3022423608427205000, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1229313551) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 12293086 + ... + 12293185.

It is an arithmetic number, because the mean of its divisors is an integer number (190543608).

Almost surely, 2^1229313550 is an apocalyptic number.

1229313550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1229313550 is a deficient number, since it is larger than the sum of its proper divisors (1057209746).

1229313550 is a wasteful number, since it uses less digits than its factorization.

1229313550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24586283 (or 24586278 counting only the distinct ones).

The product of its (nonzero) digits is 8100, while the sum is 31.

The square root of 1229313550 is about 35061.5679911780. The cubic root of 1229313550 is about 1071.2419125837.

The spelling of 1229313550 in words is "one billion, two hundred twenty-nine million, three hundred thirteen thousand, five hundred fifty".