316421144 has 32 divisors (see below), whose sum is σ = 642180000. Its totient is φ = 145297152.

The previous prime is 316421111. The next prime is 316421177. The reversal of 316421144 is 441124613.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (316421111) and next prime (316421177).

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13052 + ... + 28340.

It is an arithmetic number, because the mean of its divisors is an integer number (20068125).

Almost surely, 2^316421144 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 316421144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (321090000).

316421144 is an abundant number, since it is smaller than the sum of its proper divisors (325758856).

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

316421144 is a wasteful number, since it uses less digits than its factorization.

316421144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15507 (or 15503 counting only the distinct ones).

The product of its digits is 2304, while the sum is 26.

The square root of 316421144 is about 17788.2304909735. The cubic root of 316421144 is about 681.4309141716.

Adding to 316421144 its reverse (441124613), we get a palindrome (757545757).

The spelling of 316421144 in words is "three hundred sixteen million, four hundred twenty-one thousand, one hundred forty-four".