31223034 has 24 divisors (see below), whose sum is σ = 67901652. Its totient is φ = 10368960.

The previous prime is 31223021. The next prime is 31223041. The reversal of 31223034 is 43032213.

It can be written as a sum of positive squares in 2 ways, for example, as 29192409 + 2030625 = 5403^2 + 1425^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 31222998 and 31223016.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1972 + ... + 8144.

Almost surely, 2^31223034 is an apocalyptic number.

31223034 is an abundant number, since it is smaller than the sum of its proper divisors (36678618).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31223034 is a wasteful number, since it uses less digits than its factorization.

31223034 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6462 (or 6459 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

The square root of 31223034 is about 5587.7575108446. The cubic root of 31223034 is about 314.8896363185.

Adding to 31223034 its reverse (43032213), we get a palindrome (74255247).

The spelling of 31223034 in words is "thirty-one million, two hundred twenty-three thousand, thirty-four".