Search a number
-
+
75214345231 = 1931127698379
BaseRepresentation
bin100011000001100011…
…1111101010000001111
321012010211001121211001
41012003013331100033
52213014333021411
654315240241131
75301611246224
oct1060307752017
9235124047731
1075214345231
112999759a8a3
12126b11701a7
137128813b2c
1438d735194b
151e532a6dc1
hex11831fd40f

75214345231 has 8 divisors (see below), whose sum is σ = 81726963200. Its totient is φ = 68957124120.

The previous prime is 75214345223. The next prime is 75214345243. The reversal of 75214345231 is 13254341257.

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

It is a cyclic number.

It is not a de Polignac number, because 75214345231 - 23 = 75214345223 is a prime.

It is a super-2 number, since 2×752143452312 (a number of 23 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 (75214345631) 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, 63848601 + ... + 63849778.

It is an arithmetic number, because the mean of its divisors is an integer number (10215870400).

Almost surely, 275214345231 is an apocalyptic number.

75214345231 is a deficient number, since it is larger than the sum of its proper divisors (6512617969).

75214345231 is a wasteful number, since it uses less digits than its factorization.

75214345231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127698429.

The product of its digits is 100800, while the sum is 37.

Adding to 75214345231 its reverse (13254341257), we get a palindrome (88468686488).

The spelling of 75214345231 in words is "seventy-five billion, two hundred fourteen million, three hundred forty-five thousand, two hundred thirty-one".

Divisors: 1 19 31 589 127698379 2426269201 3958649749 75214345231