31130103103320 has 128 divisors (see below), whose sum is σ = 100638948312000. Its totient is φ = 7657859825664.

The previous prime is 31130103103291. The next prime is 31130103103417. The reversal of 31130103103320 is 2330130103113.

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, 4002045 + ... + 8847404.

Almost surely, 2^{31130103103320} is an apocalyptic number.

31130103103320 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

31130103103320 is an abundant number, since it is smaller than the sum of its proper divisors (69508845208680).

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

31130103103320 is a wasteful number, since it uses less digits than its factorization.

31130103103320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12851029 (or 12851025 counting only the distinct ones).

The product of its (nonzero) digits is 486, while the sum is 21.

Adding to 31130103103320 its reverse (2330130103113), we get a palindrome (33460233206433).

The spelling of 31130103103320 in words is "thirty-one trillion, one hundred thirty billion, one hundred three million, one hundred three thousand, three hundred twenty".