31748964520 has 256 divisors, whose sum is σ = 91547366400. Its totient is φ = 9638092800.

The previous prime is 31748964487. The next prime is 31748964523. The reversal of 31748964520 is 2546984713.

It is a happy number.

It is a super-3 number, since 3×31748964520³ (a number of 32 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (31748964523) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 17627620 + ... + 17629420.

It is an arithmetic number, because the mean of its divisors is an integer number (357606900).

It is a 1-persistent number, because it is pandigital, but 2⋅31748964520 = 63497929040 is not.

Almost surely, 2^31748964520 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31748964520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45773683200).

31748964520 is an abundant number, since it is smaller than the sum of its proper divisors (59798401880).

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

31748964520 is a wasteful number, since it uses less digits than its factorization.

31748964520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2028 (or 2024 counting only the distinct ones).

The product of its (nonzero) digits is 1451520, while the sum is 49.

The spelling of 31748964520 in words is "thirty-one billion, seven hundred forty-eight million, nine hundred sixty-four thousand, five hundred twenty".