1213430051 has 2 divisors, whose sum is σ = 1213430052. Its totient is φ = 1213430050.

The previous prime is 1213430039. The next prime is 1213430069. The reversal of 1213430051 is 1500343121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1213430051 - 2²² = 1209235747 is a prime.

It is not a weakly prime, because it can be changed into another prime (1213430011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606715025 + 606715026.

It is an arithmetic number, because the mean of its divisors is an integer number (606715026).

Almost surely, 2^1213430051 is an apocalyptic number.

1213430051 is a deficient number, since it is larger than the sum of its proper divisors (1).

1213430051 is an equidigital number, since it uses as much as digits as its factorization.

1213430051 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 1213430051 is about 34834.3228870607. The cubic root of 1213430051 is about 1066.6081931596.

Adding to 1213430051 its reverse (1500343121), we get a palindrome (2713773172).

The spelling of 1213430051 in words is "one billion, two hundred thirteen million, four hundred thirty thousand, fifty-one".