191341340 has 24 divisors (see below), whose sum is σ = 402675840. Its totient is φ = 76372928.

The previous prime is 191341321. The next prime is 191341363. The reversal of 191341340 is 43143191.

It is a super-2 number, since 2×191341340² = 73223016785991200, which contains 22 as substring.

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, 407 + ... + 19566.

It is an arithmetic number, because the mean of its divisors is an integer number (16778160).

Almost surely, 2^191341340 is an apocalyptic number.

191341340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

191341340 is an abundant number, since it is smaller than the sum of its proper divisors (211334500).

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

191341340 is a wasteful number, since it uses less digits than its factorization.

191341340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20461 (or 20459 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 191341340 is about 13832.6186964002. The cubic root of 191341340 is about 576.2393833634.

The spelling of 191341340 in words is "one hundred ninety-one million, three hundred forty-one thousand, three hundred forty".