1011320252 has 12 divisors (see below), whose sum is σ = 1770353760. Its totient is φ = 505504896.

The previous prime is 1011320243. The next prime is 1011320267. The reversal of 1011320252 is 2520231101.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 1011320252.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23477 + ... + 50732.

It is an arithmetic number, because the mean of its divisors is an integer number (147529480).

Almost surely, 2^1011320252 is an apocalyptic number.

It is an amenable number.

1011320252 is a deficient number, since it is larger than the sum of its proper divisors (759033508).

1011320252 is a wasteful number, since it uses less digits than its factorization.

1011320252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77620 (or 77618 counting only the distinct ones).

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

The square root of 1011320252 is about 31801.2617988658. The cubic root of 1011320252 is about 1003.7592675322.

Adding to 1011320252 its reverse (2520231101), we get a palindrome (3531551353).

The spelling of 1011320252 in words is "one billion, eleven million, three hundred twenty thousand, two hundred fifty-two".