31423233424321 has 8 divisors (see below), whose sum is σ = 31802025457440. Its totient is φ = 31044446126112.

The previous prime is 31423233424291. The next prime is 31423233424357. The reversal of 31423233424321 is 12342433232413.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31423233424321 is a prime.

It is a super-2 number, since 2×31423233424321² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31423233424381) 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, 13219146 + ... + 15414028.

It is an arithmetic number, because the mean of its divisors is an integer number (3975253182180).

Almost surely, 2^{31423233424321} is an apocalyptic number.

It is an amenable number.

31423233424321 is a deficient number, since it is larger than the sum of its proper divisors (378792033119).

31423233424321 is a wasteful number, since it uses less digits than its factorization.

31423233424321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2367455.

The product of its digits is 248832, while the sum is 37.

Adding to 31423233424321 its reverse (12342433232413), we get a palindrome (43765666656734).

The spelling of 31423233424321 in words is "thirty-one trillion, four hundred twenty-three billion, two hundred thirty-three million, four hundred twenty-four thousand, three hundred twenty-one".