31423465473 has 4 divisors (see below), whose sum is σ = 41897953968. Its totient is φ = 20948976980.

The previous prime is 31423465459. The next prime is 31423465477. The reversal of 31423465473 is 37456432413.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 31423465473 - 2⁸ = 31423465217 is a prime.

It is a super-2 number, since 2×31423465473² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (31423465477) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5237244243 + ... + 5237244248.

It is an arithmetic number, because the mean of its divisors is an integer number (10474488492).

Almost surely, 2^31423465473 is an apocalyptic number.

It is an amenable number.

31423465473 is a deficient number, since it is larger than the sum of its proper divisors (10474488495).

31423465473 is a wasteful number, since it uses less digits than its factorization.

31423465473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10474488494.

The product of its digits is 725760, while the sum is 42.

Adding to 31423465473 its reverse (37456432413), we get a palindrome (68879897886).

The spelling of 31423465473 in words is "thirty-one billion, four hundred twenty-three million, four hundred sixty-five thousand, four hundred seventy-three".