31020000421 has 8 divisors (see below), whose sum is σ = 31574743200. Its totient is φ = 30466223760.

The previous prime is 31020000377. The next prime is 31020000491. The reversal of 31020000421 is 12400002013.

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

It is a cyclic number.

It is not a de Polignac number, because 31020000421 - 2²¹ = 31017903269 is a prime.

It is a super-2 number, since 2×31020000421² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31020000491) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 176586 + ... + 305323.

It is an arithmetic number, because the mean of its divisors is an integer number (3946842900).

Almost surely, 2^31020000421 is an apocalyptic number.

It is an amenable number.

31020000421 is a deficient number, since it is larger than the sum of its proper divisors (554742779).

31020000421 is a wasteful number, since it uses less digits than its factorization.

31020000421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 483059.

The product of its (nonzero) digits is 48, while the sum is 13.

Adding to 31020000421 its reverse (12400002013), we get a palindrome (43420002434).

The spelling of 31020000421 in words is "thirty-one billion, twenty million, four hundred twenty-one", and thus it is an aban number.