402313340 has 96 divisors (see below), whose sum is σ = 999806976. Its totient is φ = 134058240.

The previous prime is 402313337. The next prime is 402313397. The reversal of 402313340 is 43313204.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 465749 + ... + 466611.

It is an arithmetic number, because the mean of its divisors is an integer number (10414656).

Almost surely, 2^402313340 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 402313340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (499903488).

402313340 is an abundant number, since it is smaller than the sum of its proper divisors (597493636).

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

402313340 is a wasteful number, since it uses less digits than its factorization.

402313340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1059 (or 1057 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 20.

The square root of 402313340 is about 20057.7501230821. The cubic root of 402313340 is about 738.2239731676.

Adding to 402313340 its reverse (43313204), we get a palindrome (445626544).

The spelling of 402313340 in words is "four hundred two million, three hundred thirteen thousand, three hundred forty".