2111402031 has 4 divisors (see below), whose sum is σ = 2815202712. Its totient is φ = 1407601352.

The previous prime is 2111401997. The next prime is 2111402053. The reversal of 2111402031 is 1302041112.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2111402031 - 2¹³ = 2111393839 is a prime.

It is a super-2 number, since 2×2111402031² = 8916037073021849922, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2111402031.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2111402131) 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, 351900336 + ... + 351900341.

It is an arithmetic number, because the mean of its divisors is an integer number (703800678).

Almost surely, 2^2111402031 is an apocalyptic number.

2111402031 is a deficient number, since it is larger than the sum of its proper divisors (703800681).

2111402031 is an equidigital number, since it uses as much as digits as its factorization.

2111402031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 703800680.

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 2111402031 is about 45949.9948966265. The cubic root of 2111402031 is about 1282.8926343254.

Adding to 2111402031 its reverse (1302041112), we get a palindrome (3413443143).

The spelling of 2111402031 in words is "two billion, one hundred eleven million, four hundred two thousand, thirty-one".