31200010223 has 4 divisors (see below), whose sum is σ = 33035304960. Its totient is φ = 29364715488.

The previous prime is 31200010211. The next prime is 31200010243. The reversal of 31200010223 is 32201000213.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32201000213 = 2239 ⋅14381867.

It is a cyclic number.

It is not a de Polignac number, because 31200010223 - 2¹⁰ = 31200009199 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31200010198 and 31200010207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31200010243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 917647343 + ... + 917647376.

It is an arithmetic number, because the mean of its divisors is an integer number (8258826240).

Almost surely, 2^31200010223 is an apocalyptic number.

31200010223 is a deficient number, since it is larger than the sum of its proper divisors (1835294737).

31200010223 is a wasteful number, since it uses less digits than its factorization.

31200010223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1835294736.

The product of its (nonzero) digits is 72, while the sum is 14.

Adding to 31200010223 its reverse (32201000213), we get a palindrome (63401010436).

It can be divided in two parts, 312000 and 10223, that added together give a palindrome (322223).

The spelling of 31200010223 in words is "thirty-one billion, two hundred million, ten thousand, two hundred twenty-three".