31456212480 has 1440 divisors, whose sum is σ = 147363559200. Its totient is φ = 6110576640.

The previous prime is 31456212427. The next prime is 31456212509. The reversal of 31456212480 is 8421265413.

It is a happy number.

31456212480 is a `hidden beast` number, since 3 + 1 + 4 + 5 + 621 + 24 + 8 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (1440).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 211115446 + ... + 211115594.

It is an arithmetic number, because the mean of its divisors is an integer number (102335805).

Almost surely, 2^31456212480 is an apocalyptic number.

31456212480 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 31456212480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (73681779600).

31456212480 is an abundant number, since it is smaller than the sum of its proper divisors (115907346720).

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

31456212480 is a wasteful number, since it uses less digits than its factorization.

31456212480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220 (or 194 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 36.

Adding to 31456212480 its reverse (8421265413), we get a palindrome (39877477893).

The spelling of 31456212480 in words is "thirty-one billion, four hundred fifty-six million, two hundred twelve thousand, four hundred eighty".