31423203232 has 24 divisors (see below), whose sum is σ = 61946202276. Its totient is φ = 15690834432.

The previous prime is 31423203197. The next prime is 31423203241. The reversal of 31423203232 is 23230232413.

It can be written as a sum of positive squares in 2 ways, for example, as 31143778576 + 279424656 = 176476^2 + 16716^2 .

It is a junction number, because it is equal to n+sod(n) for n = 31423203197 and 31423203206.

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, 624373 + ... + 672820.

Almost surely, 2^31423203232 is an apocalyptic number.

31423203232 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

31423203232 is a deficient number, since it is larger than the sum of its proper divisors (30522999044).

31423203232 is a wasteful number, since it uses less digits than its factorization.

31423203232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1297960 (or 1297952 counting only the distinct ones).

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

Adding to 31423203232 its reverse (23230232413), we get a palindrome (54653435645).

The spelling of 31423203232 in words is "thirty-one billion, four hundred twenty-three million, two hundred three thousand, two hundred thirty-two".