130331213321 has 4 divisors (see below), whose sum is σ = 133510023444. Its totient is φ = 127152403200.

The previous prime is 130331213281. The next prime is 130331213347. The reversal of 130331213321 is 123312133031.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 65247550096 + 65083663225 = 255436^2 + 255115^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-130331213321 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (130331213021) 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, 1589405000 + ... + 1589405081.

It is an arithmetic number, because the mean of its divisors is an integer number (33377505861).

Almost surely, 2^130331213321 is an apocalyptic number.

It is an amenable number.

130331213321 is a deficient number, since it is larger than the sum of its proper divisors (3178810123).

130331213321 is an equidigital number, since it uses as much as digits as its factorization.

130331213321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3178810122.

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

Adding to 130331213321 its reverse (123312133031), we get a palindrome (253643346352).

The spelling of 130331213321 in words is "one hundred thirty billion, three hundred thirty-one million, two hundred thirteen thousand, three hundred twenty-one".