1303213312331 has 8 divisors (see below), whose sum is σ = 1491710183904. Its totient is φ = 1115297326080.

The previous prime is 1303213312307. The next prime is 1303213312337. The reversal of 1303213312331 is 1332133123031.

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

It is a de Polignac number, because none of the positive numbers 2^k-1303213312331 is a prime.

It is a super-2 number, since 2×1303213312331² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1303213312331.

It is not an unprimeable number, because it can be changed into a prime (1303213312337) 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, 145216520 + ... + 145225493.

It is an arithmetic number, because the mean of its divisors is an integer number (186463772988).

Almost surely, 2^{1303213312331} is an apocalyptic number.

1303213312331 is a deficient number, since it is larger than the sum of its proper divisors (188496871573).

1303213312331 is an equidigital number, since it uses as much as digits as its factorization.

1303213312331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 290442661.

The product of its (nonzero) digits is 2916, while the sum is 26.

Adding to 1303213312331 its reverse (1332133123031), we get a palindrome (2635346435362).

The spelling of 1303213312331 in words is "one trillion, three hundred three billion, two hundred thirteen million, three hundred twelve thousand, three hundred thirty-one".