311203311132 has 48 divisors (see below), whose sum is σ = 829960651520. Its totient is φ = 88906108032.

The previous prime is 311203311131. The next prime is 311203311151. The reversal of 311203311132 is 231113302113.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 311203311099 and 311203311108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (311203311131) 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, 655683 + ... + 1025829.

Almost surely, 2^311203311132 is an apocalyptic number.

It is an amenable number.

311203311132 is an abundant number, since it is smaller than the sum of its proper divisors (518757340388).

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

311203311132 is a wasteful number, since it uses less digits than its factorization.

311203311132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 380170 (or 380168 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 21.

Adding to 311203311132 its reverse (231113302113), we get a palindrome (542316613245).

The spelling of 311203311132 in words is "three hundred eleven billion, two hundred three million, three hundred eleven thousand, one hundred thirty-two".