31435042 has 8 divisors (see below), whose sum is σ = 48042396. Its totient is φ = 15420912.

The previous prime is 31435031. The next prime is 31435049. The reversal of 31435042 is 24053413.

It can be written as a sum of positive squares in 2 ways, for example, as 29582721 + 1852321 = 5439^2 + 1361^2 .

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

It is a zygodrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (31435049) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 148173 + ... + 148384.

Almost surely, 2^31435042 is an apocalyptic number.

31435042 is a deficient number, since it is larger than the sum of its proper divisors (16607354).

31435042 is a wasteful number, since it uses less digits than its factorization.

31435042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 296612.

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 31435042 is about 5606.6961751106. The cubic root of 31435042 is about 315.6007415529.

Adding to 31435042 its reverse (24053413), we get a palindrome (55488455).

The spelling of 31435042 in words is "thirty-one million, four hundred thirty-five thousand, forty-two".