1231233031051 has 2 divisors, whose sum is σ = 1231233031052. Its totient is φ = 1231233031050.

The previous prime is 1231233030983. The next prime is 1231233031057. The reversal of 1231233031051 is 1501303321321.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1231233031051 - 2¹¹ = 1231233029003 is a prime.

It is not a weakly prime, because it can be changed into another prime (1231233031057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 615616515525 + 615616515526.

It is an arithmetic number, because the mean of its divisors is an integer number (615616515526).

Almost surely, 2^{1231233031051} is an apocalyptic number.

1231233031051 is a deficient number, since it is larger than the sum of its proper divisors (1).

1231233031051 is an equidigital number, since it uses as much as digits as its factorization.

1231233031051 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1620, while the sum is 25.

Adding to 1231233031051 its reverse (1501303321321), we get a palindrome (2732536352372).

The spelling of 1231233031051 in words is "one trillion, two hundred thirty-one billion, two hundred thirty-three million, thirty-one thousand, fifty-one".