311489006400 has 1008 divisors, whose sum is σ = 1307439526848. Its totient is φ = 69341184000.

The previous prime is 311489006369. The next prime is 311489006401. The reversal of 311489006400 is 4600984113.

311489006400 is a `hidden beast` number, since 3 + 1 + 1 + 4 + 8 + 9 + 0 + 0 + 640 + 0 = 666.

It is a super-2 number, since 2×311489006400² (a number of 24 digits) contains 22 as substring.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (311489006401) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 681594972 + ... + 681595428.

Almost surely, 2^311489006400 is an apocalyptic number.

311489006400 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 311489006400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (653719763424).

311489006400 is an abundant number, since it is smaller than the sum of its proper divisors (995950520448).

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

311489006400 is a wasteful number, since it uses less digits than its factorization.

311489006400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 840 (or 822 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The spelling of 311489006400 in words is "three hundred eleven billion, four hundred eighty-nine million, six thousand, four hundred".