31424156 has 6 divisors (see below), whose sum is σ = 54992280. Its totient is φ = 15712076.

The previous prime is 31424117. The next prime is 31424171. The reversal of 31424156 is 65142413.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3928016 + ... + 3928023.

It is an arithmetic number, because the mean of its divisors is an integer number (9165380).

Almost surely, 2^31424156 is an apocalyptic number.

It is an amenable number.

31424156 is a deficient number, since it is larger than the sum of its proper divisors (23568124).

31424156 is a wasteful number, since it uses less digits than its factorization.

31424156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7856043 (or 7856041 counting only the distinct ones).

The product of its digits is 2880, while the sum is 26.

The square root of 31424156 is about 5605.7252875966. The cubic root of 31424156 is about 315.5643063507.

Adding to 31424156 its reverse (65142413), we get a palindrome (96566569).

The spelling of 31424156 in words is "thirty-one million, four hundred twenty-four thousand, one hundred fifty-six".