31426436 has 12 divisors (see below), whose sum is σ = 56770560. Its totient is φ = 15206280.

The previous prime is 31426411. The next prime is 31426471. The reversal of 31426436 is 63462413.

It is a junction number, because it is equal to n+sod(n) for n = 31426399 and 31426408.

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, 126596 + ... + 126843.

It is an arithmetic number, because the mean of its divisors is an integer number (4730880).

Almost surely, 2^31426436 is an apocalyptic number.

It is an amenable number.

31426436 is a deficient number, since it is larger than the sum of its proper divisors (25344124).

31426436 is a wasteful number, since it uses less digits than its factorization.

31426436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 253474 (or 253472 counting only the distinct ones).

The product of its digits is 10368, while the sum is 29.

The square root of 31426436 is about 5605.9286474232. The cubic root of 31426436 is about 315.5719381570.

Adding to 31426436 its reverse (63462413), we get a palindrome (94888849).

The spelling of 31426436 in words is "thirty-one million, four hundred twenty-six thousand, four hundred thirty-six".