1331022002 has 8 divisors (see below), whose sum is σ = 1996688556. Its totient is φ = 665459152.

The previous prime is 1331021969. The next prime is 1331022059. The reversal of 1331022002 is 2002201331.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1286011321 + 45010681 = 35861^2 + 6709^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

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, 32468 + ... + 60960.

Almost surely, 2^1331022002 is an apocalyptic number.

1331022002 is a deficient number, since it is larger than the sum of its proper divisors (665666554).

1331022002 is a wasteful number, since it uses less digits than its factorization.

1331022002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51852.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 1331022002 is about 36483.1742314180. The cubic root of 1331022002 is about 1100.0060611236.

Adding to 1331022002 its reverse (2002201331), we get a palindrome (3333223333).

The spelling of 1331022002 in words is "one billion, three hundred thirty-one million, twenty-two thousand, two".