1213322734 has 16 divisors (see below), whose sum is σ = 1960770672. Its totient is φ = 559770048.

The previous prime is 1213322731. The next prime is 1213322743. The reversal of 1213322734 is 4372233121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213322731) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 68877 + ... + 84679.

It is an arithmetic number, because the mean of its divisors is an integer number (122548167).

Almost surely, 2^1213322734 is an apocalyptic number.

1213322734 is a deficient number, since it is larger than the sum of its proper divisors (747447938).

1213322734 is a wasteful number, since it uses less digits than its factorization.

1213322734 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18771.

The product of its digits is 6048, while the sum is 28.

The square root of 1213322734 is about 34832.7824613538. The cubic root of 1213322734 is about 1066.5767482579.

Adding to 1213322734 its reverse (4372233121), we get a palindrome (5585555855).

The spelling of 1213322734 in words is "one billion, two hundred thirteen million, three hundred twenty-two thousand, seven hundred thirty-four".