31423300420 has 24 divisors (see below), whose sum is σ = 67392952704. Its totient is φ = 12301887456.

The previous prime is 31423300411. The next prime is 31423300421. The reversal of 31423300420 is 2400332413.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 31423300391 and 31423300400.

It is not an unprimeable number, because it can be changed into a prime (31423300421) 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, 16713582 + ... + 16715461.

It is an arithmetic number, because the mean of its divisors is an integer number (2808039696).

Almost surely, 2^31423300420 is an apocalyptic number.

It is an amenable number.

31423300420 is an abundant number, since it is smaller than the sum of its proper divisors (35969652284).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31423300420 is a wasteful number, since it uses less digits than its factorization.

31423300420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33429099 (or 33429097 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 22.

Adding to 31423300420 its reverse (2400332413), we get a palindrome (33823632833).

The spelling of 31423300420 in words is "thirty-one billion, four hundred twenty-three million, three hundred thousand, four hundred twenty".