131111002 has 12 divisors (see below), whose sum is σ = 216171018. Its totient is φ = 59595800.

The previous prime is 131110979. The next prime is 131111011. The reversal of 131111002 is 200111131.

It can be written as a sum of positive squares in only one way, i.e., 75325041 + 55785961 = 8679^2 + 7469^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 131111002.

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 5 ways as a sum of consecutive naturals, for example, 270649 + ... + 271132.

Almost surely, 2^131111002 is an apocalyptic number.

131111002 is a deficient number, since it is larger than the sum of its proper divisors (85060016).

131111002 is a wasteful number, since it uses less digits than its factorization.

131111002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 541805 (or 541794 counting only the distinct ones).

The product of its (nonzero) digits is 6, while the sum is 10.

The square root of 131111002 is about 11450.3712603566. The cubic root of 131111002 is about 508.0187155979.

Adding to 131111002 its reverse (200111131), we get a palindrome (331222133).

The spelling of 131111002 in words is "one hundred thirty-one million, one hundred eleven thousand, two".