133031211320 has 48 divisors (see below), whose sum is σ = 348188838840. Its totient is φ = 45610700352.

The previous prime is 133031211283. The next prime is 133031211323. The reversal of 133031211320 is 23112130331.

It is a super-2 number, since 2×133031211320² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 133031211292 and 133031211301.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133031211323) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 33934574 + ... + 33938493.

Almost surely, 2^133031211320 is an apocalyptic number.

133031211320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

133031211320 is an abundant number, since it is smaller than the sum of its proper divisors (215157627520).

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

133031211320 is a wasteful number, since it uses less digits than its factorization.

133031211320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67873092 (or 67873081 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 133031211320 its reverse (23112130331), we get a palindrome (156143341651).

The spelling of 133031211320 in words is "one hundred thirty-three billion, thirty-one million, two hundred eleven thousand, three hundred twenty".