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1214232013 = 3113904283
BaseRepresentation
bin100100001011111…
…1011010111001101
310010121210101012001
41020113323113031
54441320411023
6320253112301
742042542011
oct11027732715
93117711161
101214232013
11573447535
1229a788691
131647383a7
14b7396541
15718ec6ad
hex485fb5cd

1214232013 has 4 divisors (see below), whose sum is σ = 1218136608. Its totient is φ = 1210327420.

The previous prime is 1214231957. The next prime is 1214232029. The reversal of 1214232013 is 3102324121.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 3102324121 = 13238640317.

It is a cyclic number.

It is not a de Polignac number, because 1214232013 - 217 = 1214100941 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1214232053) 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, 1951831 + ... + 1952452.

It is an arithmetic number, because the mean of its divisors is an integer number (304534152).

Almost surely, 21214232013 is an apocalyptic number.

It is an amenable number.

1214232013 is a deficient number, since it is larger than the sum of its proper divisors (3904595).

1214232013 is an equidigital number, since it uses as much as digits as its factorization.

1214232013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3904594.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 1214232013 is about 34845.8320750129. The cubic root of 1214232013 is about 1066.8431169793.

Adding to 1214232013 its reverse (3102324121), we get a palindrome (4316556134).

The spelling of 1214232013 in words is "one billion, two hundred fourteen million, two hundred thirty-two thousand, thirteen".

Divisors: 1 311 3904283 1214232013