21031032302 has 16 divisors (see below), whose sum is σ = 36424883040. Its totient is φ = 8920378368.

The previous prime is 21031032293. The next prime is 21031032311. The reversal of 21031032302 is 20323013012.

It is an interprime number because it is at equal distance from previous prime (21031032293) and next prime (21031032311).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7742027 + ... + 7744742.

It is an arithmetic number, because the mean of its divisors is an integer number (2276555190).

Almost surely, 2^21031032302 is an apocalyptic number.

21031032302 is a deficient number, since it is larger than the sum of its proper divisors (15393850738).

21031032302 is a wasteful number, since it uses less digits than its factorization.

21031032302 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15486875.

The product of its (nonzero) digits is 216, while the sum is 17.

Adding to 21031032302 its reverse (20323013012), we get a palindrome (41354045314).

The spelling of 21031032302 in words is "twenty-one billion, thirty-one million, thirty-two thousand, three hundred two".