31211143102 has 8 divisors (see below), whose sum is σ = 46827761256. Its totient is φ = 15601889352.

The previous prime is 31211143099. The next prime is 31211143147. The reversal of 31211143102 is 20134111213.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 31211143102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1830493 + ... + 1847464.

It is an arithmetic number, because the mean of its divisors is an integer number (5853470157).

Almost surely, 2^31211143102 is an apocalyptic number.

31211143102 is a deficient number, since it is larger than the sum of its proper divisors (15616618154).

31211143102 is a wasteful number, since it uses less digits than its factorization.

31211143102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3682202.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 31211143102 its reverse (20134111213), we get a palindrome (51345254315).

The spelling of 31211143102 in words is "thirty-one billion, two hundred eleven million, one hundred forty-three thousand, one hundred two".