1311020322232 has 64 divisors (see below), whose sum is σ = 2525812813440. Its totient is φ = 637749763200.

The previous prime is 1311020322221. The next prime is 1311020322233. The reversal of 1311020322232 is 2322230201131.

It is a super-2 number, since 2×1311020322232² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1311020322233) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18948982 + ... + 19018042.

It is an arithmetic number, because the mean of its divisors is an integer number (39465825210).

Almost surely, 2^{1311020322232} is an apocalyptic number.

It is an amenable number.

1311020322232 is a deficient number, since it is larger than the sum of its proper divisors (1214792491208).

1311020322232 is a wasteful number, since it uses less digits than its factorization.

1311020322232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69572 (or 69568 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 1311020322232 its reverse (2322230201131), we get a palindrome (3633250523363).

The spelling of 1311020322232 in words is "one trillion, three hundred eleven billion, twenty million, three hundred twenty-two thousand, two hundred thirty-two".