31542434 has 16 divisors (see below), whose sum is σ = 58988736. Its totient is φ = 12289200.

The previous prime is 31542419. The next prime is 31542437. The reversal of 31542434 is 43424513.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (31542437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 102257 + ... + 102564.

It is an arithmetic number, because the mean of its divisors is an integer number (3686796).

Almost surely, 2^31542434 is an apocalyptic number.

31542434 is a deficient number, since it is larger than the sum of its proper divisors (27446302).

31542434 is a wasteful number, since it uses less digits than its factorization.

31542434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 204841.

The product of its digits is 5760, while the sum is 26.

The square root of 31542434 is about 5616.2651290693. The cubic root of 31542434 is about 315.9597302206.

Adding to 31542434 its reverse (43424513), we get a palindrome (74966947).

The spelling of 31542434 in words is "thirty-one million, five hundred forty-two thousand, four hundred thirty-four".