31132303001321 has 4 divisors (see below), whose sum is σ = 31132317720192. Its totient is φ = 31132288282452.

The previous prime is 31132303001311. The next prime is 31132303001489. The reversal of 31132303001321 is 12310030323113.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31132303001321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31132303001311) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3518561 + ... + 8639726.

It is an arithmetic number, because the mean of its divisors is an integer number (7783079430048).

Almost surely, 2^{31132303001321} is an apocalyptic number.

It is an amenable number.

31132303001321 is a deficient number, since it is larger than the sum of its proper divisors (14718871).

31132303001321 is a wasteful number, since it uses less digits than its factorization.

31132303001321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14718870.

The product of its (nonzero) digits is 972, while the sum is 23.

Adding to 31132303001321 its reverse (12310030323113), we get a palindrome (43442333324434).

The spelling of 31132303001321 in words is "thirty-one trillion, one hundred thirty-two billion, three hundred three million, one thousand, three hundred twenty-one".