211230489957 has 8 divisors (see below), whose sum is σ = 289252562976. Its totient is φ = 137014371792.

The previous prime is 211230489931. The next prime is 211230489983. The reversal of 211230489957 is 759984032112.

It is an interprime number because it is at equal distance from previous prime (211230489931) and next prime (211230489983).

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

It is a de Polignac number, because none of the positive numbers 2^k-211230489957 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211230439957) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 951488583 + ... + 951488804.

It is an arithmetic number, because the mean of its divisors is an integer number (36156570372).

Almost surely, 2^211230489957 is an apocalyptic number.

It is an amenable number.

211230489957 is a deficient number, since it is larger than the sum of its proper divisors (78022073019).

211230489957 is a wasteful number, since it uses less digits than its factorization.

211230489957 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1902977427.

The product of its (nonzero) digits is 1088640, while the sum is 51.

The spelling of 211230489957 in words is "two hundred eleven billion, two hundred thirty million, four hundred eighty-nine thousand, nine hundred fifty-seven".