31423232203445 has 32 divisors (see below), whose sum is σ = 39202143160320. Its totient is φ = 24162008232960.

The previous prime is 31423232203421. The next prime is 31423232203483. The reversal of 31423232203445 is 54430223232413.

It is not a de Polignac number, because 31423232203445 - 2¹² = 31423232199349 is a prime.

It is a super-2 number, since 2×31423232203445² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 31423232203399 and 31423232203408.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5278244 + ... + 9523986.

It is an arithmetic number, because the mean of its divisors is an integer number (1225066973760).

Almost surely, 2^{31423232203445} is an apocalyptic number.

It is an amenable number.

31423232203445 is a deficient number, since it is larger than the sum of its proper divisors (7778910956875).

31423232203445 is a wasteful number, since it uses less digits than its factorization.

31423232203445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4246325.

The product of its (nonzero) digits is 414720, while the sum is 38.

Adding to 31423232203445 its reverse (54430223232413), we get a palindrome (85853455435858).

The spelling of 31423232203445 in words is "thirty-one trillion, four hundred twenty-three billion, two hundred thirty-two million, two hundred three thousand, four hundred forty-five".