1310220112 has 20 divisors (see below), whose sum is σ = 2561844340. Its totient is φ = 649099008.

The previous prime is 1310220097. The next prime is 1310220127. The reversal of 1310220112 is 2110220131.

It is an interprime number because it is at equal distance from previous prime (1310220097) and next prime (1310220127).

It can be written as a sum of positive squares in 2 ways, for example, as 921972496 + 388247616 = 30364^2 + 19704^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1310220092 and 1310220101.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 373893 + ... + 377380.

It is an arithmetic number, because the mean of its divisors is an integer number (128092217).

Almost surely, 2^1310220112 is an apocalyptic number.

It is an amenable number.

1310220112 is a deficient number, since it is larger than the sum of its proper divisors (1251624228).

1310220112 is a wasteful number, since it uses less digits than its factorization.

1310220112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 751390 (or 751384 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 1310220112 is about 36196.9627455122. The cubic root of 1310220112 is about 1094.2454611550.

Adding to 1310220112 its reverse (2110220131), we get a palindrome (3420440243).

The spelling of 1310220112 in words is "one billion, three hundred ten million, two hundred twenty thousand, one hundred twelve".