42351031 has 8 divisors (see below), whose sum is σ = 43092800. Its totient is φ = 41614560.

The previous prime is 42351013. The next prime is 42351037. The reversal of 42351031 is 13015324.

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-42351031 is a prime.

It is a super-2 number, since 2×42351031² = 3587219653525922, 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 (42351037) 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, 16921 + ... + 19261.

It is an arithmetic number, because the mean of its divisors is an integer number (5386600).

Almost surely, 2^42351031 is an apocalyptic number.

42351031 is a deficient number, since it is larger than the sum of its proper divisors (741769).

42351031 is a wasteful number, since it uses less digits than its factorization.

42351031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2649.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 42351031 is about 6507.7669749308. The cubic root of 42351031 is about 348.5683862319.

Adding to 42351031 its reverse (13015324), we get a palindrome (55366355).

The spelling of 42351031 in words is "forty-two million, three hundred fifty-one thousand, thirty-one".