31068623 has 4 divisors (see below), whose sum is σ = 31089240. Its totient is φ = 31048008.

The previous prime is 31068619. The next prime is 31068647. The reversal of 31068623 is 32686013.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 31068623 - 2² = 31068619 is a prime.

It is a super-2 number, since 2×31068623² = 1930518670232258, which contains 22 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 (31068613) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7853 + ... + 11126.

It is an arithmetic number, because the mean of its divisors is an integer number (7772310).

Almost surely, 2^31068623 is an apocalyptic number.

31068623 is a deficient number, since it is larger than the sum of its proper divisors (20617).

31068623 is a wasteful number, since it uses less digits than its factorization.

31068623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20616.

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 31068623 is about 5573.9234835078. The cubic root of 31068623 is about 314.3696911466.

The spelling of 31068623 in words is "thirty-one million, sixty-eight thousand, six hundred twenty-three".