31143242030 has 16 divisors (see below), whose sum is σ = 56059995024. Its totient is φ = 12456816960.

The previous prime is 31143242017. The next prime is 31143242051. The reversal of 31143242030 is 3024234113.

It is a junction number, because it is equal to n+sod(n) for n = 31143241987 and 31143242005.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 338945 + ... + 420915.

It is an arithmetic number, because the mean of its divisors is an integer number (3503749689).

Almost surely, 2^31143242030 is an apocalyptic number.

31143242030 is a deficient number, since it is larger than the sum of its proper divisors (24916752994).

31143242030 is a wasteful number, since it uses less digits than its factorization.

31143242030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119971.

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 31143242030 its reverse (3024234113), we get a palindrome (34167476143).

The spelling of 31143242030 in words is "thirty-one billion, one hundred forty-three million, two hundred forty-two thousand, thirty".