Search a number
-
+
31436054 = 2131209079
BaseRepresentation
bin111011111101…
…0110100010110
32012011010011022
41313322310112
531021423204
63041441142
7531126206
oct167726426
965133138
1031436054
1116821411
12a6401b2
136688820
144264406
152b5e5be
hex1dfad16

31436054 has 8 divisors (see below), whose sum is σ = 50781360. Its totient is φ = 14508936.

The previous prime is 31436039. The next prime is 31436057. The reversal of 31436054 is 45063413.

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

It is a Harshad number since it is a multiple of its sum of digits (26), and also a Moran number because the ratio is a prime number: 1209079 = 31436054 / (3 + 1 + 4 + 3 + 6 + 0 + 5 + 4).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31436057) 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, 604514 + ... + 604565.

It is an arithmetic number, because the mean of its divisors is an integer number (6347670).

Almost surely, 231436054 is an apocalyptic number.

31436054 is a deficient number, since it is larger than the sum of its proper divisors (19345306).

31436054 is a wasteful number, since it uses less digits than its factorization.

31436054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1209094.

The product of its (nonzero) digits is 4320, while the sum is 26.

The square root of 31436054 is about 5606.7864236120. The cubic root of 31436054 is about 315.6041282672.

Adding to 31436054 its reverse (45063413), we get a palindrome (76499467).

The spelling of 31436054 in words is "thirty-one million, four hundred thirty-six thousand, fifty-four".

Divisors: 1 2 13 26 1209079 2418158 15718027 31436054