31263203445 has 16 divisors (see below), whose sum is σ = 52195957632. Its totient is φ = 15948764480.

The previous prime is 31263203443. The next prime is 31263203467. The reversal of 31263203445 is 54430236213.

It is a happy number.

It is not a de Polignac number, because 31263203445 - 2¹ = 31263203443 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31263203443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45308646 + ... + 45309335.

It is an arithmetic number, because the mean of its divisors is an integer number (3262247352).

Almost surely, 2^31263203445 is an apocalyptic number.

It is an amenable number.

31263203445 is a deficient number, since it is larger than the sum of its proper divisors (20932754187).

31263203445 is a wasteful number, since it uses less digits than its factorization.

31263203445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90618012.

The product of its (nonzero) digits is 51840, while the sum is 33.

Adding to 31263203445 its reverse (54430236213), we get a palindrome (85693439658).

The spelling of 31263203445 in words is "thirty-one billion, two hundred sixty-three million, two hundred three thousand, four hundred forty-five".