31223014426 has 4 divisors (see below), whose sum is σ = 46834521642. Its totient is φ = 15611507212.

The previous prime is 31223014409. The next prime is 31223014463. The reversal of 31223014426 is 62441032213.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 62441032213 = 7 ⋅8920147459.

It can be written as a sum of positive squares in only one way, i.e., 24597217225 + 6625797201 = 156835^2 + 81399^2 .

It is a junction number, because it is equal to n+sod(n) for n = 31223014394 and 31223014403.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7805753605 + ... + 7805753608.

Almost surely, 2^31223014426 is an apocalyptic number.

31223014426 is a deficient number, since it is larger than the sum of its proper divisors (15611507216).

31223014426 is a wasteful number, since it uses less digits than its factorization.

31223014426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15611507215.

The product of its (nonzero) digits is 6912, while the sum is 28.

Adding to 31223014426 its reverse (62441032213), we get a palindrome (93664046639).

The spelling of 31223014426 in words is "thirty-one billion, two hundred twenty-three million, fourteen thousand, four hundred twenty-six".