1310772732220 has 96 divisors (see below), whose sum is σ = 3231328963968. Its totient is φ = 437200561152.

The previous prime is 1310772732187. The next prime is 1310772732229. The reversal of 1310772732220 is 222372770131.

It is a super-2 number, since 2×1310772732220² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a self number, because there is not a number n which added to its sum of digits gives 1310772732220.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1310772732229) 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, 51647454 + ... + 51672826.

It is an arithmetic number, because the mean of its divisors is an integer number (33659676708).

Almost surely, 2^{1310772732220} is an apocalyptic number.

1310772732220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1310772732220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1615664481984).

1310772732220 is an abundant number, since it is smaller than the sum of its proper divisors (1920556231748).

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

1310772732220 is a wasteful number, since it uses less digits than its factorization.

1310772732220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35399 (or 35397 counting only the distinct ones).

The product of its (nonzero) digits is 49392, while the sum is 37.

The spelling of 1310772732220 in words is "one trillion, three hundred ten billion, seven hundred seventy-two million, seven hundred thirty-two thousand, two hundred twenty".