31002300000 has 1296 divisors, whose sum is σ = 138581286480. Its totient is φ = 6531840000.

The previous prime is 31002299989. The next prime is 31002300011. The reversal of 31002300000 is 320013.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (31002299989) and next prime (31002300011).

It is a super-2 number, since 2×31002300000² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a super Niven number, because it is divisible the sum of any subset of its (nonzero) digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 215 ways as a sum of consecutive naturals, for example, 837899982 + ... + 837900018.

It is an arithmetic number, because the mean of its divisors is an integer number (106930005).

Almost surely, 2^31002300000 is an apocalyptic number.

31002300000 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 31002300000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (69290643240).

31002300000 is an abundant number, since it is smaller than the sum of its proper divisors (107578986480).

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

31002300000 is a wasteful number, since it uses less digits than its factorization.

31002300000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111 (or 73 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 9.

Adding to 31002300000 its reverse (320013), we get a palindrome (31002620013).

The spelling of 31002300000 in words is "thirty-one billion, two million, three hundred thousand".