1231470240 has 576 divisors, whose sum is σ = 5270323968. Its totient is φ = 235192320.

The previous prime is 1231470217. The next prime is 1231470281. The reversal of 1231470240 is 420741321.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 1231470240.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 5285164 + ... + 5285396.

It is an arithmetic number, because the mean of its divisors is an integer number (9149868).

Almost surely, 2^1231470240 is an apocalyptic number.

1231470240 is a gapful number since it is divisible by the number (10) 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 1231470240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2635161984).

1231470240 is an abundant number, since it is smaller than the sum of its proper divisors (4038853728).

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

1231470240 is a wasteful number, since it uses less digits than its factorization.

1231470240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 293 (or 274 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 24.

The square root of 1231470240 is about 35092.3102687754. The cubic root of 1231470240 is about 1071.8680037226.

The spelling of 1231470240 in words is "one billion, two hundred thirty-one million, four hundred seventy thousand, two hundred forty".