31020143230 has 16 divisors (see below), whose sum is σ = 56348519040. Its totient is φ = 12294221472.

The previous prime is 31020143207. The next prime is 31020143249. The reversal of 31020143230 is 3234102013.

It is a junction number, because it is equal to n+sod(n) for n = 31020143198 and 31020143207.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14228334 + ... + 14230513.

It is an arithmetic number, because the mean of its divisors is an integer number (3521782440).

Almost surely, 2^31020143230 is an apocalyptic number.

31020143230 is a deficient number, since it is larger than the sum of its proper divisors (25328375810).

31020143230 is a wasteful number, since it uses less digits than its factorization.

31020143230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28458963.

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

Adding to 31020143230 its reverse (3234102013), we get a palindrome (34254245243).

The spelling of 31020143230 in words is "thirty-one billion, twenty million, one hundred forty-three thousand, two hundred thirty".