Search a number
-
+
70431 = 3171381
BaseRepresentation
bin10001001100011111
310120121120
4101030133
54223211
61302023
7412224
oct211437
9116546
1070431
1148a09
1234913
132609a
141b94b
1515d06
hex1131f

70431 has 8 divisors (see below), whose sum is σ = 99504. Its totient is φ = 44160.

The previous prime is 70429. The next prime is 70439. The reversal of 70431 is 13407.

Adding to 70431 its reverse (13407), we get a palindrome (83838).

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

It is not a de Polignac number, because 70431 - 21 = 70429 is a prime.

It is a super-2 number, since 2×704312 = 9921051522, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 70431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70439) 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, 640 + ... + 741.

It is an arithmetic number, because the mean of its divisors is an integer number (12438).

270431 is an apocalyptic number.

70431 is a deficient number, since it is larger than the sum of its proper divisors (29073).

70431 is a wasteful number, since it uses less digits than its factorization.

70431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1401.

The product of its (nonzero) digits is 84, while the sum is 15.

The square root of 70431 is about 265.3883946219. The cubic root of 70431 is about 41.2972644644.

The spelling of 70431 in words is "seventy thousand, four hundred thirty-one".

Divisors: 1 3 17 51 1381 4143 23477 70431