1213124036 has 24 divisors (see below), whose sum is σ = 2134103160. Its totient is φ = 603389952.

The previous prime is 1213124021. The next prime is 1213124051. The reversal of 1213124036 is 6304213121.

It is an interprime number because it is at equal distance from previous prime (1213124021) and next prime (1213124051).

It can be written as a sum of positive squares in 4 ways, for example, as 325441600 + 887682436 = 18040^2 + 29794^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 813980 + ... + 815468.

It is an arithmetic number, because the mean of its divisors is an integer number (88920965).

Almost surely, 2^1213124036 is an apocalyptic number.

It is an amenable number.

1213124036 is a deficient number, since it is larger than the sum of its proper divisors (920979124).

1213124036 is a wasteful number, since it uses less digits than its factorization.

1213124036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2423 (or 2421 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 1213124036 is about 34829.9301750664. The cubic root of 1213124036 is about 1066.5185229590.

Adding to 1213124036 its reverse (6304213121), we get a palindrome (7517337157).

The spelling of 1213124036 in words is "one billion, two hundred thirteen million, one hundred twenty-four thousand, thirty-six".