31012323000 has 128 divisors (see below), whose sum is σ = 96830061120. Its totient is φ = 8263833600.

The previous prime is 31012322989. The next prime is 31012323019. The reversal of 31012323000 is 32321013.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5256052 + ... + 5261948.

Almost surely, 2^31012323000 is an apocalyptic number.

31012323000 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31012323000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (48415030560).

31012323000 is an abundant number, since it is smaller than the sum of its proper divisors (65817738120).

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

31012323000 is a wasteful number, since it uses less digits than its factorization.

31012323000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7674 (or 7660 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 15.

Adding to 31012323000 its reverse (32321013), we get a palindrome (31044644013).

The spelling of 31012323000 in words is "thirty-one billion, twelve million, three hundred twenty-three thousand".