31020230143 has 32 divisors (see below), whose sum is σ = 37199619072. Its totient is φ = 25316928000.

The previous prime is 31020230141. The next prime is 31020230183. The reversal of 31020230143 is 34103202013.

It is not a de Polignac number, because 31020230143 - 2¹ = 31020230141 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 31020230143.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31020230141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2067318 + ... + 2082268.

It is an arithmetic number, because the mean of its divisors is an integer number (1162488096).

Almost surely, 2^31020230143 is an apocalyptic number.

31020230143 is a deficient number, since it is larger than the sum of its proper divisors (6179388929).

31020230143 is a wasteful number, since it uses less digits than its factorization.

31020230143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15175.

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 31020230143 its reverse (34103202013), we get a palindrome (65123432156).

The spelling of 31020230143 in words is "thirty-one billion, twenty million, two hundred thirty thousand, one hundred forty-three".