42311397 has 8 divisors (see below), whose sum is σ = 56445760. Its totient is φ = 28192320.

The previous prime is 42311389. The next prime is 42311407. The reversal of 42311397 is 79311324.

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

It is not a de Polignac number, because 42311397 - 2³ = 42311389 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42311897) 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, 7104 + ... + 11622.

It is an arithmetic number, because the mean of its divisors is an integer number (7055720).

Almost surely, 2^42311397 is an apocalyptic number.

It is an amenable number.

42311397 is a deficient number, since it is larger than the sum of its proper divisors (14134363).

42311397 is a wasteful number, since it uses less digits than its factorization.

42311397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7643.

The product of its digits is 4536, while the sum is 30.

The square root of 42311397 is about 6504.7211316089. The cubic root of 42311397 is about 348.4596169690.

The spelling of 42311397 in words is "forty-two million, three hundred eleven thousand, three hundred ninety-seven".