31003343421 has 8 divisors (see below), whose sum is σ = 41585323584. Its totient is φ = 20545129440.

The previous prime is 31003343369. The next prime is 31003343431. The reversal of 31003343421 is 12434330013.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-31003343421 is a prime.

It is a super-2 number, since 2×31003343421² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 31003343391 and 31003343400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31003343431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30940960 + ... + 30941961.

It is an arithmetic number, because the mean of its divisors is an integer number (5198165448).

Almost surely, 2^31003343421 is an apocalyptic number.

It is an amenable number.

31003343421 is a deficient number, since it is larger than the sum of its proper divisors (10581980163).

31003343421 is a wasteful number, since it uses less digits than its factorization.

31003343421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61883091.

The product of its (nonzero) digits is 2592, while the sum is 24.

Adding to 31003343421 its reverse (12434330013), we get a palindrome (43437673434).

The spelling of 31003343421 in words is "thirty-one billion, three million, three hundred forty-three thousand, four hundred twenty-one".