1021303131 has 16 divisors (see below), whose sum is σ = 1384239360. Its totient is φ = 669690720.

The previous prime is 1021303099. The next prime is 1021303133. The reversal of 1021303131 is 1313031201.

It is not a de Polignac number, because 1021303131 - 2⁵ = 1021303099 is a prime.

It is a super-2 number, since 2×1021303131² = 2086120170780806322, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1021303131.

It is not an unprimeable number, because it can be changed into a prime (1021303133) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48066 + ... + 65976.

It is an arithmetic number, because the mean of its divisors is an integer number (86514960).

Almost surely, 2^1021303131 is an apocalyptic number.

1021303131 is a deficient number, since it is larger than the sum of its proper divisors (362936229).

1021303131 is a wasteful number, since it uses less digits than its factorization.

1021303131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18226.

The product of its (nonzero) digits is 54, while the sum is 15.

The square root of 1021303131 is about 31957.8336405959. The cubic root of 1021303131 is about 1007.0512072816.

Adding to 1021303131 its reverse (1313031201), we get a palindrome (2334334332).

The spelling of 1021303131 in words is "one billion, twenty-one million, three hundred three thousand, one hundred thirty-one".