1321213430131 has 8 divisors (see below), whose sum is σ = 1531225223424. Its totient is φ = 1116518391240.

The previous prime is 1321213430101. The next prime is 1321213430161. The reversal of 1321213430131 is 1310343121231.

It is an interprime number because it is at equal distance from previous prime (1321213430101) and next prime (1321213430161).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1321213430131 - 2⁹ = 1321213429619 is a prime.

It is a super-2 number, since 2×1321213430131² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1321213430096 and 1321213430105.

It is not an unprimeable number, because it can be changed into a prime (1321213430101) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1329188065 + ... + 1329189058.

It is an arithmetic number, because the mean of its divisors is an integer number (191403152928).

Almost surely, 2^{1321213430131} is an apocalyptic number.

1321213430131 is a deficient number, since it is larger than the sum of its proper divisors (210011793293).

1321213430131 is an equidigital number, since it uses as much as digits as its factorization.

1321213430131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2658377201.

The product of its (nonzero) digits is 1296, while the sum is 25.

Adding to 1321213430131 its reverse (1310343121231), we get a palindrome (2631556551362).

The spelling of 1321213430131 in words is "one trillion, three hundred twenty-one billion, two hundred thirteen million, four hundred thirty thousand, one hundred thirty-one".