42711031 has 8 divisors (see below), whose sum is σ = 49046400. Its totient is φ = 36784440.

The previous prime is 42711001. The next prime is 42711047. The reversal of 42711031 is 13011724.

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

It is not a de Polignac number, because 42711031 - 2¹¹ = 42708983 is a prime.

It is a super-2 number, since 2×42711031² = 3648464338165922, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42711001) 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, 101971 + ... + 102388.

It is an arithmetic number, because the mean of its divisors is an integer number (6130800).

Almost surely, 2^42711031 is an apocalyptic number.

42711031 is a deficient number, since it is larger than the sum of its proper divisors (6335369).

42711031 is a wasteful number, since it uses less digits than its factorization.

42711031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 204389.

The product of its (nonzero) digits is 168, while the sum is 19.

The square root of 42711031 is about 6535.3677019736. The cubic root of 42711031 is about 349.5532558635.

Adding to 42711031 its reverse (13011724), we get a palindrome (55722755).

The spelling of 42711031 in words is "forty-two million, seven hundred eleven thousand, thirty-one".