531740381 has 8 divisors (see below), whose sum is σ = 555353280. Its totient is φ = 508168672.

The previous prime is 531740359. The next prime is 531740383. The reversal of 531740381 is 183047135.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-531740381 is a prime.

It is a super-2 number, since 2×531740381² = 565495665572050322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (531740383) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17750 + ... + 37128.

It is an arithmetic number, because the mean of its divisors is an integer number (69419160).

Almost surely, 2^531740381 is an apocalyptic number.

It is an amenable number.

531740381 is a deficient number, since it is larger than the sum of its proper divisors (23612899).

531740381 is a wasteful number, since it uses less digits than its factorization.

531740381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20595.

The product of its (nonzero) digits is 10080, while the sum is 32.

The square root of 531740381 is about 23059.4965469760. The cubic root of 531740381 is about 810.1520727531.

The spelling of 531740381 in words is "five hundred thirty-one million, seven hundred forty thousand, three hundred eighty-one".