1331310220 has 48 divisors (see below), whose sum is σ = 2850059520. Its totient is φ = 522224576.

The previous prime is 1331310193. The next prime is 1331310247. The reversal of 1331310220 is 220131331.

It is an interprime number because it is at equal distance from previous prime (1331310193) and next prime (1331310247).

It is a junction number, because it is equal to n+sod(n) for n = 1331310194 and 1331310203.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 592419 + ... + 594661.

It is an arithmetic number, because the mean of its divisors is an integer number (59376240).

Almost surely, 2^1331310220 is an apocalyptic number.

1331310220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1331310220 is an abundant number, since it is smaller than the sum of its proper divisors (1518749300).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1331310220 is a wasteful number, since it uses less digits than its factorization.

1331310220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2814 (or 2812 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 1331310220 is about 36487.1240302658. The cubic root of 1331310220 is about 1100.0854534165.

Adding to 1331310220 its reverse (220131331), we get a palindrome (1551441551).

The spelling of 1331310220 in words is "one billion, three hundred thirty-one million, three hundred ten thousand, two hundred twenty".