1212373453 has 2 divisors, whose sum is σ = 1212373454. Its totient is φ = 1212373452.

The previous prime is 1212373439. The next prime is 1212373483. The reversal of 1212373453 is 3543732121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1200137449 + 12236004 = 34643^2 + 3498^2 .

It is an emirp because it is prime and its reverse (3543732121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1212373453 - 2¹³ = 1212365261 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1212373483) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606186726 + 606186727.

It is an arithmetic number, because the mean of its divisors is an integer number (606186727).

Almost surely, 2^1212373453 is an apocalyptic number.

It is an amenable number.

1212373453 is a deficient number, since it is larger than the sum of its proper divisors (1).

1212373453 is an equidigital number, since it uses as much as digits as its factorization.

1212373453 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15120, while the sum is 31.

The square root of 1212373453 is about 34819.1535365235. The cubic root of 1212373453 is about 1066.2985191225.

The spelling of 1212373453 in words is "one billion, two hundred twelve million, three hundred seventy-three thousand, four hundred fifty-three".