31430204230312 has 16 divisors (see below), whose sum is σ = 58977709286400. Its totient is φ = 15702815087280.

The previous prime is 31430204230273. The next prime is 31430204230379. The reversal of 31430204230312 is 21303240203413.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1535867614 + ... + 1535888077.

It is an arithmetic number, because the mean of its divisors is an integer number (3686106830400).

Almost surely, 2^{31430204230312} is an apocalyptic number.

It is an amenable number.

31430204230312 is a deficient number, since it is larger than the sum of its proper divisors (27547505056088).

31430204230312 is a wasteful number, since it uses less digits than its factorization.

31430204230312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3071756976 (or 3071756972 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 28.

Adding to 31430204230312 its reverse (21303240203413), we get a palindrome (52733444433725).

The spelling of 31430204230312 in words is "thirty-one trillion, four hundred thirty billion, two hundred four million, two hundred thirty thousand, three hundred twelve".