Search a number
-
+
31418105153 = 311013487263
BaseRepresentation
bin11101010000101010…
…100011110101000001
310000002120201002221012
4131100222203311001
51003321013331103
622233331010305
72161366326131
oct352052436501
9100076632835
1031418105153
1112362779466
126109a39995
132c69112686
141740910ac1
15c3d3982d8
hex750aa3d41

31418105153 has 4 divisors (see below), whose sum is σ = 32431592448. Its totient is φ = 30404617860.

The previous prime is 31418105143. The next prime is 31418105171. The reversal of 31418105153 is 35150181413.

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: 35150181413 = 149923449087.

It is a cyclic number.

It is not a de Polignac number, because 31418105153 - 216 = 31418039617 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31418105143) 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, 506743601 + ... + 506743662.

It is an arithmetic number, because the mean of its divisors is an integer number (8107898112).

Almost surely, 231418105153 is an apocalyptic number.

It is an amenable number.

31418105153 is a deficient number, since it is larger than the sum of its proper divisors (1013487295).

31418105153 is a wasteful number, since it uses less digits than its factorization.

31418105153 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1013487294.

The product of its (nonzero) digits is 7200, while the sum is 32.

Adding to 31418105153 its reverse (35150181413), we get a palindrome (66568286566).

The spelling of 31418105153 in words is "thirty-one billion, four hundred eighteen million, one hundred five thousand, one hundred fifty-three".

Divisors: 1 31 1013487263 31418105153