31421304143430 has 32 divisors (see below), whose sum is σ = 78689874726144. Its totient is φ = 8014709462496.

The previous prime is 31421304143389. The next prime is 31421304143441. The reversal of 31421304143430 is 3434140312413.

It is a junction number, because it is equal to n+sod(n) for n = 31421304143391 and 31421304143400.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22769060284 + ... + 22769061663.

It is an arithmetic number, because the mean of its divisors is an integer number (2459058585192).

Almost surely, 2^{31421304143430} is an apocalyptic number.

31421304143430 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

31421304143430 is an abundant number, since it is smaller than the sum of its proper divisors (47268570582714).

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

31421304143430 is a wasteful number, since it uses less digits than its factorization.

31421304143430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45538121980.

The product of its (nonzero) digits is 41472, while the sum is 33.

Adding to 31421304143430 its reverse (3434140312413), we get a palindrome (34855444455843).

The spelling of 31421304143430 in words is "thirty-one trillion, four hundred twenty-one billion, three hundred four million, one hundred forty-three thousand, four hundred thirty".