31020421303 has 8 divisors (see below), whose sum is σ = 31259592000. Its totient is φ = 30781663968.

The previous prime is 31020421291. The next prime is 31020421337. The reversal of 31020421303 is 30312402013.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31020421303 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31020421903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48178 + ... + 253696.

It is an arithmetic number, because the mean of its divisors is an integer number (3907449000).

Almost surely, 2^31020421303 is an apocalyptic number.

31020421303 is a deficient number, since it is larger than the sum of its proper divisors (239170697).

31020421303 is a wasteful number, since it uses less digits than its factorization.

31020421303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206681.

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 31020421303 its reverse (30312402013), we get a palindrome (61332823316).

The spelling of 31020421303 in words is "thirty-one billion, twenty million, four hundred twenty-one thousand, three hundred three".