213781105948 has 12 divisors (see below), whose sum is σ = 386185223872. Its totient is φ = 103442470560.

The previous prime is 213781105933. The next prime is 213781105957. The reversal of 213781105948 is 849501187312.

It is a super-2 number, since 2×213781105948² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 862020465 + ... + 862020712.

Almost surely, 2^213781105948 is an apocalyptic number.

It is an amenable number.

213781105948 is a deficient number, since it is larger than the sum of its proper divisors (172404117924).

213781105948 is a wasteful number, since it uses less digits than its factorization.

213781105948 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1724041212 (or 1724041210 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 49.

The spelling of 213781105948 in words is "two hundred thirteen billion, seven hundred eighty-one million, one hundred five thousand, nine hundred forty-eight".