31496443 has 4 divisors (see below), whose sum is σ = 34359768. Its totient is φ = 28633120.

The previous prime is 31496441. The next prime is 31496449. The reversal of 31496443 is 34469413.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34469413 = 11 ⋅3133583.

It is a cyclic number.

It is not a de Polignac number, because 31496443 - 2¹ = 31496441 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31496399 and 31496408.

It is not an unprimeable number, because it can be changed into a prime (31496441) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1431646 + ... + 1431667.

It is an arithmetic number, because the mean of its divisors is an integer number (8589942).

Almost surely, 2^31496443 is an apocalyptic number.

31496443 is a deficient number, since it is larger than the sum of its proper divisors (2863325).

31496443 is a wasteful number, since it uses less digits than its factorization.

31496443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2863324.

The product of its digits is 31104, while the sum is 34.

The square root of 31496443 is about 5612.1691884689. The cubic root of 31496443 is about 315.8060919797.

The spelling of 31496443 in words is "thirty-one million, four hundred ninety-six thousand, four hundred forty-three".