Search a number
-
+
102262831 = 1131299891
BaseRepresentation
bin1100001100001…
…10100000101111
321010102111020021
412012012200233
5202134402311
614051503011
72351135236
oct606064057
9233374207
10102262831
11527a7640
122a2b7a67
1318256768
14d81db1d
158ea0171
hex618682f

102262831 has 8 divisors (see below), whose sum is σ = 115158528. Its totient is φ = 89967000.

The previous prime is 102262793. The next prime is 102262847. The reversal of 102262831 is 138262201.

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 102262831 - 217 = 102131759 is a prime.

It is a super-2 number, since 2×1022628312 = 20915373208269122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 102262796 and 102262805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102262891) 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, 149605 + ... + 150286.

It is an arithmetic number, because the mean of its divisors is an integer number (14394816).

Almost surely, 2102262831 is an apocalyptic number.

102262831 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

102262831 is a deficient number, since it is larger than the sum of its proper divisors (12895697).

102262831 is a wasteful number, since it uses less digits than its factorization.

102262831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 299933.

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 102262831 is about 10112.5086402930. The cubic root of 102262831 is about 467.6338465452.

The spelling of 102262831 in words is "one hundred two million, two hundred sixty-two thousand, eight hundred thirty-one".

Divisors: 1 11 31 341 299891 3298801 9296621 102262831