31234000 has 160 divisors (see below), whose sum is σ = 90994176. Its totient is φ = 10137600.

The previous prime is 31233989. The next prime is 31234001. The reversal of 31234000 is 43213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31234001) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 321952 + ... + 322048.

Almost surely, 2^31234000 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31234000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45497088).

31234000 is an abundant number, since it is smaller than the sum of its proper divisors (59760176).

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

31234000 is a wasteful number, since it uses less digits than its factorization.

31234000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150 (or 134 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 13.

The square root of 31234000 is about 5588.7386770183. The cubic root of 31234000 is about 314.9264966652.

Adding to 31234000 its reverse (43213), we get a palindrome (31277213).

The spelling of 31234000 in words is "thirty-one million, two hundred thirty-four thousand".