21314377 has 8 divisors (see below), whose sum is σ = 24506496. Its totient is φ = 18159072.

The previous prime is 21314357. The next prime is 21314387. The reversal of 21314377 is 77341312.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21314377 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21314327) 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, 7948 + ... + 10285.

It is an arithmetic number, because the mean of its divisors is an integer number (3063312).

Almost surely, 2^21314377 is an apocalyptic number.

It is an amenable number.

21314377 is a deficient number, since it is larger than the sum of its proper divisors (3192119).

21314377 is a wasteful number, since it uses less digits than its factorization.

21314377 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18407.

The product of its digits is 3528, while the sum is 28.

The square root of 21314377 is about 4616.7496141766. The cubic root of 21314377 is about 277.2623379753.

Adding to 21314377 its reverse (77341312), we get a palindrome (98655689).

The spelling of 21314377 in words is "twenty-one million, three hundred fourteen thousand, three hundred seventy-seven".