1213452434531 has 2 divisors, whose sum is σ = 1213452434532. Its totient is φ = 1213452434530.

The previous prime is 1213452434503. The next prime is 1213452434539. The reversal of 1213452434531 is 1354342543121.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1213452434531 is a prime.

It is a super-2 number, since 2×1213452434531² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1213452434539) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606726217265 + 606726217266.

It is an arithmetic number, because the mean of its divisors is an integer number (606726217266).

Almost surely, 2^{1213452434531} is an apocalyptic number.

1213452434531 is a deficient number, since it is larger than the sum of its proper divisors (1).

1213452434531 is an equidigital number, since it uses as much as digits as its factorization.

1213452434531 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 172800, while the sum is 38.

Adding to 1213452434531 its reverse (1354342543121), we get a palindrome (2567794977652).

The spelling of 1213452434531 in words is "one trillion, two hundred thirteen billion, four hundred fifty-two million, four hundred thirty-four thousand, five hundred thirty-one".