42311091 has 8 divisors (see below), whose sum is σ = 57939664. Its totient is φ = 27444960.

The previous prime is 42311089. The next prime is 42311107. The reversal of 42311091 is 19011324.

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

It is not a de Polignac number, because 42311091 - 2¹ = 42311089 is a prime.

It is a super-2 number, since 2×42311091² = 3580456843220562, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42313091) 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, 190480 + ... + 190701.

It is an arithmetic number, because the mean of its divisors is an integer number (7242458).

Almost surely, 2^42311091 is an apocalyptic number.

42311091 is a deficient number, since it is larger than the sum of its proper divisors (15628573).

42311091 is a wasteful number, since it uses less digits than its factorization.

42311091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 381221.

The product of its (nonzero) digits is 216, while the sum is 21.

The square root of 42311091 is about 6504.6976101891. The cubic root of 42311091 is about 348.4587769361.

The spelling of 42311091 in words is "forty-two million, three hundred eleven thousand, ninety-one".