31430134201312 has 48 divisors (see below), whose sum is σ = 77146693045632. Its totient is φ = 12245506830720.

The previous prime is 31430134201303. The next prime is 31430134201313. The reversal of 31430134201312 is 21310243103413.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31430134201313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6377865678 + ... + 6377870605.

It is an arithmetic number, because the mean of its divisors is an integer number (1607222771784).

Almost surely, 2^{31430134201312} is an apocalyptic number.

31430134201312 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

31430134201312 is an abundant number, since it is smaller than the sum of its proper divisors (45716558844320).

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

31430134201312 is a wasteful number, since it uses less digits than its factorization.

31430134201312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12755736311 (or 12755736303 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 28.

Adding to 31430134201312 its reverse (21310243103413), we get a palindrome (52740377304725).

The spelling of 31430134201312 in words is "thirty-one trillion, four hundred thirty billion, one hundred thirty-four million, two hundred one thousand, three hundred twelve".