31423154 has 16 divisors (see below), whose sum is σ = 54038976. Its totient is φ = 13424400.

The previous prime is 31423127. The next prime is 31423159. The reversal of 31423154 is 45132413.

It is not an unprimeable number, because it can be changed into a prime (31423159) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1244 + ... + 8024.

It is an arithmetic number, because the mean of its divisors is an integer number (3377436).

Almost surely, 2^31423154 is an apocalyptic number.

31423154 is a deficient number, since it is larger than the sum of its proper divisors (22615822).

31423154 is a wasteful number, since it uses less digits than its factorization.

31423154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7121.

The product of its digits is 1440, while the sum is 23.

The square root of 31423154 is about 5605.6359139709. The cubic root of 31423154 is about 315.5609522559.

Adding to 31423154 its reverse (45132413), we get a palindrome (76555567).

The spelling of 31423154 in words is "thirty-one million, four hundred twenty-three thousand, one hundred fifty-four".