1021313002 has 4 divisors (see below), whose sum is σ = 1531969506. Its totient is φ = 510656500.

The previous prime is 1021312991. The next prime is 1021313009. The reversal of 1021313002 is 2003131201.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 959202841 + 62110161 = 30971^2 + 7881^2 .

It is not an unprimeable number, because it can be changed into a prime (1021313009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 255328249 + ... + 255328252.

Almost surely, 2^1021313002 is an apocalyptic number.

1021313002 is a deficient number, since it is larger than the sum of its proper divisors (510656504).

1021313002 is an equidigital number, since it uses as much as digits as its factorization.

1021313002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 510656503.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 1021313002 is about 31957.9880781003. The cubic root of 1021313002 is about 1007.0544516891.

Adding to 1021313002 its reverse (2003131201), we get a palindrome (3024444203).

The spelling of 1021313002 in words is "one billion, twenty-one million, three hundred thirteen thousand, two".