Search a number
-
+
30211223002231 = 215891399380379
BaseRepresentation
bin1101101111010000110010…
…01101110001110001110111
310221222011110002001000202211
412313220121031301301313
512424440041042032411
6144130502205114251
76235455161315305
oct667503115616167
9127864402030684
1030211223002231
119698564863a07
12347b179558987
1313b1ba1934b3b
14766333bcb275
15375ce368c221
hex1b7a19371c77

30211223002231 has 4 divisors (see below), whose sum is σ = 30212622404200. Its totient is φ = 30209823600264.

The previous prime is 30211223002199. The next prime is 30211223002253. The reversal of 30211223002231 is 13220032211203.

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 30211223002231 - 25 = 30211223002199 is a prime.

It is a super-2 number, since 2×302112230022312 (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30211223002271) 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, 699668601 + ... + 699711778.

It is an arithmetic number, because the mean of its divisors is an integer number (7553155601050).

Almost surely, 230211223002231 is an apocalyptic number.

30211223002231 is a deficient number, since it is larger than the sum of its proper divisors (1399401969).

30211223002231 is a wasteful number, since it uses less digits than its factorization.

30211223002231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1399401968.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 30211223002231 its reverse (13220032211203), we get a palindrome (43431255213434).

The spelling of 30211223002231 in words is "thirty trillion, two hundred eleven billion, two hundred twenty-three million, two thousand, two hundred thirty-one".

Divisors: 1 21589 1399380379 30211223002231