397313340 has 48 divisors (see below), whose sum is σ = 1150843680. Its totient is φ = 102296320.

The previous prime is 397313327. The next prime is 397313347. The reversal of 397313340 is 43313793.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (397313347) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 112431 + ... + 115910.

It is an arithmetic number, because the mean of its divisors is an integer number (23975910).

Almost surely, 2^397313340 is an apocalyptic number.

397313340 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

397313340 is an abundant number, since it is smaller than the sum of its proper divisors (753530340).

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

397313340 is a wasteful number, since it uses less digits than its factorization.

397313340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228382 (or 228380 counting only the distinct ones).

The product of its (nonzero) digits is 20412, while the sum is 33.

The square root of 397313340 is about 19932.7203361709. The cubic root of 397313340 is about 735.1529692260.

It can be divided in two parts, 39731 and 3340, that added together give a triangular number (43071 = T₂₉₃).

The spelling of 397313340 in words is "three hundred ninety-seven million, three hundred thirteen thousand, three hundred forty".