31028665223 has 8 divisors (see below), whose sum is σ = 32908521696. Its totient is φ = 29193040800.

The previous prime is 31028665219. The next prime is 31028665229. The reversal of 31028665223 is 32256682013.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 31028665223 - 2² = 31028665219 is a prime.

It is a super-3 number, since 3×31028665223³ (a number of 32 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31028665229) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11056568 + ... + 11059373.

It is an arithmetic number, because the mean of its divisors is an integer number (4113565212).

Almost surely, 2^31028665223 is an apocalyptic number.

31028665223 is a deficient number, since it is larger than the sum of its proper divisors (1879856473).

31028665223 is a wasteful number, since it uses less digits than its factorization.

31028665223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22116025.

The product of its (nonzero) digits is 103680, while the sum is 38.

The spelling of 31028665223 in words is "thirty-one billion, twenty-eight million, six hundred sixty-five thousand, two hundred twenty-three".