1310222991 has 32 divisors (see below), whose sum is σ = 2272739328. Its totient is φ = 651039840.

The previous prime is 1310222983. The next prime is 1310223001. The reversal of 1310222991 is 1992220131.

It is not a de Polignac number, because 1310222991 - 2³ = 1310222983 is a prime.

It is a super-2 number, since 2×1310222991² = 3433368572289972162, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1310222491) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 117991 + ... + 128616.

It is an arithmetic number, because the mean of its divisors is an integer number (71023104).

Almost surely, 2^1310222991 is an apocalyptic number.

1310222991 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1310222991 is a deficient number, since it is larger than the sum of its proper divisors (962516337).

1310222991 is a wasteful number, since it uses less digits than its factorization.

1310222991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 246651.

The product of its (nonzero) digits is 1944, while the sum is 30.

The square root of 1310222991 is about 36197.0025140204. The cubic root of 1310222991 is about 1094.2462626311.

The spelling of 1310222991 in words is "one billion, three hundred ten million, two hundred twenty-two thousand, nine hundred ninety-one".