31421430343 has 8 divisors (see below), whose sum is σ = 31798252080. Its totient is φ = 31046845440.

The previous prime is 31421430311. The next prime is 31421430349. The reversal of 31421430343 is 34303412413.

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 31421430343 - 2⁵ = 31421430311 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31421430349) 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, 530938 + ... + 587143.

It is an arithmetic number, because the mean of its divisors is an integer number (3974781510).

Almost surely, 2^31421430343 is an apocalyptic number.

31421430343 is a deficient number, since it is larger than the sum of its proper divisors (376821737).

31421430343 is a wasteful number, since it uses less digits than its factorization.

31421430343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1118417.

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

Adding to 31421430343 its reverse (34303412413), we get a palindrome (65724842756).

The spelling of 31421430343 in words is "thirty-one billion, four hundred twenty-one million, four hundred thirty thousand, three hundred forty-three".