211431400402004 has 12 divisors (see below), whose sum is σ = 370029705270624. Its totient is φ = 105708627467544.

The previous prime is 211431400401983. The next prime is 211431400402007. The reversal of 211431400402004 is 400204004134112.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211431400402007) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1768116104 + ... + 1768235679.

It is an arithmetic number, because the mean of its divisors is an integer number (30835808772552).

Almost surely, 2^{211431400402004} is an apocalyptic number.

It is an amenable number.

211431400402004 is a deficient number, since it is larger than the sum of its proper divisors (158598304868620).

211431400402004 is a wasteful number, since it uses less digits than its factorization.

211431400402004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3536366734 (or 3536366732 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 26.

Adding to 211431400402004 its reverse (400204004134112), we get a palindrome (611635404536116).

The spelling of 211431400402004 in words is "two hundred eleven trillion, four hundred thirty-one billion, four hundred million, four hundred two thousand, four".