31426142 has 32 divisors (see below), whose sum is σ = 54120960. Its totient is φ = 13546720.

The previous prime is 31426103. The next prime is 31426177. The reversal of 31426142 is 24162413.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 87359 + ... + 87717.

It is an arithmetic number, because the mean of its divisors is an integer number (1691280).

Almost surely, 2^31426142 is an apocalyptic number.

31426142 is a deficient number, since it is larger than the sum of its proper divisors (22694818).

31426142 is a wasteful number, since it uses less digits than its factorization.

31426142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 568.

The product of its digits is 1152, while the sum is 23.

The square root of 31426142 is about 5605.9024251230. The cubic root of 31426142 is about 315.5709540764.

Adding to 31426142 its reverse (24162413), we get a palindrome (55588555).

The spelling of 31426142 in words is "thirty-one million, four hundred twenty-six thousand, one hundred forty-two".