31302000000 has 672 divisors, whose sum is σ = 118095363360. Its totient is φ = 7948800000.

The previous prime is 31301999987. The next prime is 31302000011. The reversal of 31302000000 is 20313.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 83 ways as a sum of consecutive naturals, for example, 665999977 + ... + 666000023.

Almost surely, 2^31302000000 is an apocalyptic number.

31302000000 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 31302000000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (59047681680).

31302000000 is an abundant number, since it is smaller than the sum of its proper divisors (86793363360).

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

31302000000 is an frugal number, since it uses more digits than its factorization.

31302000000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134 (or 94 counting only the distinct ones).

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

Adding to 31302000000 its reverse (20313), we get a palindrome (31302020313).

The spelling of 31302000000 in words is "thirty-one billion, three hundred two million", and thus it is an aban number.