30311331000000 has 196 divisors, whose sum is σ = 100247139163944. Its totient is φ = 8083020800000.

The previous prime is 30311330999981. The next prime is 30311331000023. The reversal of 30311331000000 is 13311303.

It is a super-2 number, since 2×30311331000000² (a number of 28 digits) contains 22 as substring.

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

It is an unprimeable number.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 2051889 + ... + 8051888.

Almost surely, 2^{30311331000000} is an apocalyptic number.

30311331000000 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

30311331000000 is an abundant number, since it is smaller than the sum of its proper divisors (69935808163944).

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

30311331000000 is an frugal number, since it uses more digits than its factorization.

30311331000000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10103822 (or 10103787 counting only the distinct ones).

The product of its (nonzero) digits is 81, while the sum is 15.

Adding to 30311331000000 its reverse (13311303), we get a palindrome (30311344311303).

The spelling of 30311331000000 in words is "thirty trillion, three hundred eleven billion, three hundred thirty-one million", and thus it is an aban number.