31423422245 has 4 divisors (see below), whose sum is σ = 37708106700. Its totient is φ = 25138737792.

The previous prime is 31423422229. The next prime is 31423422257. The reversal of 31423422245 is 54222432413.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 54222432413 = 31 ⋅1749110723.

It can be written as a sum of positive squares in 2 ways, for example, as 11386170436 + 20037251809 = 106706^2 + 141553^2 .

It is a cyclic number.

It is not a de Polignac number, because 31423422245 - 2⁴ = 31423422229 is a prime.

It is a super-3 number, since 3×31423422245³ (a number of 32 digits) contains 333 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3142342220 + ... + 3142342229.

It is an arithmetic number, because the mean of its divisors is an integer number (9427026675).

Almost surely, 2^31423422245 is an apocalyptic number.

It is an amenable number.

31423422245 is a deficient number, since it is larger than the sum of its proper divisors (6284684455).

31423422245 is an equidigital number, since it uses as much as digits as its factorization.

31423422245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6284684454.

The product of its digits is 46080, while the sum is 32.

Adding to 31423422245 its reverse (54222432413), we get a palindrome (85645854658).

The spelling of 31423422245 in words is "thirty-one billion, four hundred twenty-three million, four hundred twenty-two thousand, two hundred forty-five".