31422434 has 4 divisors (see below), whose sum is σ = 47133654. Its totient is φ = 15711216.

The previous prime is 31422403. The next prime is 31422463. The reversal of 31422434 is 43422413.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 30525625 + 896809 = 5525^2 + 947^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7855607 + ... + 7855610.

Almost surely, 2^31422434 is an apocalyptic number.

31422434 is a deficient number, since it is larger than the sum of its proper divisors (15711220).

31422434 is a wasteful number, since it uses less digits than its factorization.

31422434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15711219.

The product of its digits is 2304, while the sum is 23.

The square root of 31422434 is about 5605.5716925216. The cubic root of 31422434 is about 315.5585420838.

Adding to 31422434 its reverse (43422413), we get a palindrome (74844847).

The spelling of 31422434 in words is "thirty-one million, four hundred twenty-two thousand, four hundred thirty-four".