1231333101013 has 2 divisors, whose sum is σ = 1231333101014. Its totient is φ = 1231333101012.

The previous prime is 1231333100983. The next prime is 1231333101049. The reversal of 1231333101013 is 3101013331321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1230131646769 + 1201454244 = 1109113^2 + 34662^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1231333101013 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1231333101073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 615666550506 + 615666550507.

It is an arithmetic number, because the mean of its divisors is an integer number (615666550507).

Almost surely, 2^{1231333101013} is an apocalyptic number.

It is an amenable number.

1231333101013 is a deficient number, since it is larger than the sum of its proper divisors (1).

1231333101013 is an equidigital number, since it uses as much as digits as its factorization.

1231333101013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 486, while the sum is 22.

Adding to 1231333101013 its reverse (3101013331321), we get a palindrome (4332346432334).

The spelling of 1231333101013 in words is "one trillion, two hundred thirty-one billion, three hundred thirty-three million, one hundred one thousand, thirteen".