31033321230 has 32 divisors (see below), whose sum is σ = 74776722048. Its totient is φ = 8242580000.

The previous prime is 31033321199. The next prime is 31033321303. The reversal of 31033321230 is 3212333013.

It is a junction number, because it is equal to n+sod(n) for n = 31033321197 and 31033321206.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2053116 + ... + 2068175.

It is an arithmetic number, because the mean of its divisors is an integer number (2336772564).

Almost surely, 2^31033321230 is an apocalyptic number.

31033321230 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

31033321230 is an abundant number, since it is smaller than the sum of its proper divisors (43743400818).

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

31033321230 is a wasteful number, since it uses less digits than its factorization.

31033321230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4121552.

The product of its (nonzero) digits is 972, while the sum is 21.

Adding to 31033321230 its reverse (3212333013), we get a palindrome (34245654243).

The spelling of 31033321230 in words is "thirty-one billion, thirty-three million, three hundred twenty-one thousand, two hundred thirty".