31020003234 has 96 divisors (see below), whose sum is σ = 74578682880. Its totient is φ = 9239445600.

The previous prime is 31020003233. The next prime is 31020003247. The reversal of 31020003234 is 43230002013.

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

It is not an unprimeable number, because it can be changed into a prime (31020003233) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4874947 + ... + 4881305.

It is an arithmetic number, because the mean of its divisors is an integer number (776861280).

Almost surely, 2^31020003234 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31020003234, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37289341440).

31020003234 is an abundant number, since it is smaller than the sum of its proper divisors (43558679646).

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

31020003234 is a wasteful number, since it uses less digits than its factorization.

31020003234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6796 (or 6793 counting only the distinct ones).

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

Adding to 31020003234 its reverse (43230002013), we get a palindrome (74250005247).

The spelling of 31020003234 in words is "thirty-one billion, twenty million, three thousand, two hundred thirty-four".