1213723046 has 4 divisors (see below), whose sum is σ = 1820584572. Its totient is φ = 606861522.

The previous prime is 1213723033. The next prime is 1213723079. The reversal of 1213723046 is 6403273121.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 303430760 + ... + 303430763.

It is an arithmetic number, because the mean of its divisors is an integer number (455146143).

Almost surely, 2^1213723046 is an apocalyptic number.

1213723046 is a deficient number, since it is larger than the sum of its proper divisors (606861526).

1213723046 is an equidigital number, since it uses as much as digits as its factorization.

1213723046 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 606861525.

The product of its (nonzero) digits is 6048, while the sum is 29.

The square root of 1213723046 is about 34838.5281836073. The cubic root of 1213723046 is about 1066.6940340418.

Adding to 1213723046 its reverse (6403273121), we get a palindrome (7616996167).

The spelling of 1213723046 in words is "one billion, two hundred thirteen million, seven hundred twenty-three thousand, forty-six".