31323471480 has 288 divisors, whose sum is σ = 120944715840. Its totient is φ = 7007132160.

The previous prime is 31323471467. The next prime is 31323471511. The reversal of 31323471480 is 8417432313.

31323471480 is a `hidden beast` number, since 3 + 132 + 3 + 47 + 1 + 480 = 666.

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 71 ways as a sum of consecutive naturals, for example, 810190 + ... + 847970.

It is an arithmetic number, because the mean of its divisors is an integer number (419946930).

Almost surely, 2^31323471480 is an apocalyptic number.

31323471480 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 31323471480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (60472357920).

31323471480 is an abundant number, since it is smaller than the sum of its proper divisors (89621244360).

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

31323471480 is a wasteful number, since it uses less digits than its factorization.

31323471480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37859 (or 37845 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 36.

The spelling of 31323471480 in words is "thirty-one billion, three hundred twenty-three million, four hundred seventy-one thousand, four hundred eighty".