31332032020 has 12 divisors (see below), whose sum is σ = 65797267284. Its totient is φ = 12532812800.

The previous prime is 31332031999. The next prime is 31332032021. The reversal of 31332032020 is 2023023313.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 5097103236 + 26234928784 = 71394^2 + 161972^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31332032021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 783300781 + ... + 783300820.

It is an arithmetic number, because the mean of its divisors is an integer number (5483105607).

Almost surely, 2^31332032020 is an apocalyptic number.

It is an amenable number.

31332032020 is an abundant number, since it is smaller than the sum of its proper divisors (34465235264).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31332032020 is a wasteful number, since it uses less digits than its factorization.

31332032020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1566601610 (or 1566601608 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 19.

Adding to 31332032020 its reverse (2023023313), we get a palindrome (33355055333).

It can be divided in two parts, 3133 and 2032020, that added together give a triangular number (2035153 = T₂₀₁₇).

The spelling of 31332032020 in words is "thirty-one billion, three hundred thirty-two million, thirty-two thousand, twenty".