31426 has 8 divisors (see below), whose sum is σ = 49680. Its totient is φ = 14868.

The previous prime is 31397. The next prime is 31469. The reversal of 31426 is 62413.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 376 + ... + 451.

It is an arithmetic number, because the mean of its divisors is an integer number (6210).

2³¹⁴²⁶ is an apocalyptic number.

31426 is a deficient number, since it is larger than the sum of its proper divisors (18254).

31426 is a wasteful number, since it uses less digits than its factorization.

31426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 848.

The product of its digits is 144, while the sum is 16.

The square root of 31426 is about 177.2737995306. The cubic root of 31426 is about 31.5570478770.

Adding to 31426 its reverse (62413), we get a palindrome (93839).

It can be divided in two parts, 3 and 1426, that multiplied together give a triangular number (4278 = T₉₂).

The spelling of 31426 in words is "thirty-one thousand, four hundred twenty-six".