31205450430423 has 96 divisors (see below), whose sum is σ = 49190260654080. Its totient is φ = 19548219913920.

The previous prime is 31205450430367. The next prime is 31205450430449. The reversal of 31205450430423 is 32403405450213.

31205450430423 is a `hidden beast` number, since 3 + 120 + 5 + 4 + 504 + 3 + 0 + 4 + 23 = 666.

It is not a de Polignac number, because 31205450430423 - 2¹⁶ = 31205450364887 is a prime.

It is a super-3 number, since 3×31205450430423³ (a number of 41 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31205450450423) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 675668190 + ... + 675714372.

It is an arithmetic number, because the mean of its divisors is an integer number (512398548480).

Almost surely, 2^{31205450430423} is an apocalyptic number.

31205450430423 is a deficient number, since it is larger than the sum of its proper divisors (17984810223657).

31205450430423 is a wasteful number, since it uses less digits than its factorization.

31205450430423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46794 (or 46769 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 36.

Adding to 31205450430423 its reverse (32403405450213), we get a palindrome (63608855880636).

The spelling of 31205450430423 in words is "thirty-one trillion, two hundred five billion, four hundred fifty million, four hundred thirty thousand, four hundred twenty-three".