31331202106 has 8 divisors (see below), whose sum is σ = 47050150644. Its totient is φ = 15647818560.

The previous prime is 31331202083. The next prime is 31331202107. The reversal of 31331202106 is 60120213313.

It can be written as a sum of positive squares in 2 ways, for example, as 28589737225 + 2741464881 = 169085^2 + 52359^2 .

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

It is not an unprimeable number, because it can be changed into a prime (31331202107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8889045 + ... + 8892568.

Almost surely, 2^31331202106 is an apocalyptic number.

31331202106 is a deficient number, since it is larger than the sum of its proper divisors (15718948538).

31331202106 is a wasteful number, since it uses less digits than its factorization.

31331202106 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17782496.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 31331202106 its reverse (60120213313), we get a palindrome (91451415419).

The spelling of 31331202106 in words is "thirty-one billion, three hundred thirty-one million, two hundred two thousand, one hundred six".