1229100931 has 4 divisors (see below), whose sum is σ = 1230352272. Its totient is φ = 1227849592.

The previous prime is 1229100919. The next prime is 1229100941. The reversal of 1229100931 is 1390019221.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1229100931 is a prime.

It is a super-2 number, since 2×1229100931² = 3021378197170133522, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1229100931.

It is not an unprimeable number, because it can be changed into a prime (1229100941) 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 3 ways as a sum of consecutive naturals, for example, 624196 + ... + 626161.

It is an arithmetic number, because the mean of its divisors is an integer number (307588068).

Almost surely, 2^1229100931 is an apocalyptic number.

1229100931 is a deficient number, since it is larger than the sum of its proper divisors (1251341).

1229100931 is an equidigital number, since it uses as much as digits as its factorization.

1229100931 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1251340.

The product of its (nonzero) digits is 972, while the sum is 28.

The square root of 1229100931 is about 35058.5357794646. The cubic root of 1229100931 is about 1071.1801492479.

The spelling of 1229100931 in words is "one billion, two hundred twenty-nine million, one hundred thousand, nine hundred thirty-one".