31423223032 has 8 divisors (see below), whose sum is σ = 58918543200. Its totient is φ = 15711611512.

The previous prime is 31423223003. The next prime is 31423223071. The reversal of 31423223032 is 23032232413.

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 31423222988 and 31423223006.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1963951432 + ... + 1963951447.

It is an arithmetic number, because the mean of its divisors is an integer number (7364817900).

Almost surely, 2^31423223032 is an apocalyptic number.

It is an amenable number.

31423223032 is a deficient number, since it is larger than the sum of its proper divisors (27495320168).

31423223032 is a wasteful number, since it uses less digits than its factorization.

31423223032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3927902885 (or 3927902881 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 25.

Adding to 31423223032 its reverse (23032232413), we get a palindrome (54455455445).

The spelling of 31423223032 in words is "thirty-one billion, four hundred twenty-three million, two hundred twenty-three thousand, thirty-two".