1320213031 has 2 divisors, whose sum is σ = 1320213032. Its totient is φ = 1320213030.

The previous prime is 1320213019. The next prime is 1320213053. The reversal of 1320213031 is 1303120231.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1320213031 is a prime.

It is a super-2 number, since 2×1320213031² = 3485924894444413922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1320212996 and 1320213014.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1320213061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 660106515 + 660106516.

It is an arithmetic number, because the mean of its divisors is an integer number (660106516).

Almost surely, 2^1320213031 is an apocalyptic number.

1320213031 is a deficient number, since it is larger than the sum of its proper divisors (1).

1320213031 is an equidigital number, since it uses as much as digits as its factorization.

1320213031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 1320213031 is about 36334.7358735412. The cubic root of 1320213031 is about 1097.0203191216.

Adding to 1320213031 its reverse (1303120231), we get a palindrome (2623333262).

The spelling of 1320213031 in words is "one billion, three hundred twenty million, two hundred thirteen thousand, thirty-one".