1213020152 has 8 divisors (see below), whose sum is σ = 2274412800. Its totient is φ = 606510072.

The previous prime is 1213020131. The next prime is 1213020163. The reversal of 1213020152 is 2510203121.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 1213020152.

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, 75813752 + ... + 75813767.

It is an arithmetic number, because the mean of its divisors is an integer number (284301600).

Almost surely, 2^1213020152 is an apocalyptic number.

It is an amenable number.

1213020152 is a deficient number, since it is larger than the sum of its proper divisors (1061392648).

1213020152 is a wasteful number, since it uses less digits than its factorization.

1213020152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151627525 (or 151627521 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 1213020152 is about 34828.4388395461. The cubic root of 1213020152 is about 1066.4880788688.

Adding to 1213020152 its reverse (2510203121), we get a palindrome (3723223273).

The spelling of 1213020152 in words is "one billion, two hundred thirteen million, twenty thousand, one hundred fifty-two".