Search a number
-
+
131001027771 = 3733831561823
BaseRepresentation
bin111101000000001000…
…1010000110010111011
3110112010200112201120110
41322000101100302323
54121242230342041
6140103034355403
712315220235445
oct1720021206273
9415120481513
10131001027771
1150614735109
122147bb8bb63
13c4793b1763
1464aa403495
15361ab99516
hex1e80450cbb

131001027771 has 16 divisors (see below), whose sum is σ = 177523163136. Its totient is φ = 85912704576.

The previous prime is 131001027769. The next prime is 131001027811. The reversal of 131001027771 is 177720100131.

It is not a de Polignac number, because 131001027771 - 21 = 131001027769 is a prime.

It is a super-2 number, since 2×1310010277712 (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (131001027761) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 697035 + ... + 864788.

It is an arithmetic number, because the mean of its divisors is an integer number (11095197696).

Almost surely, 2131001027771 is an apocalyptic number.

131001027771 is a deficient number, since it is larger than the sum of its proper divisors (46522135365).

131001027771 is a wasteful number, since it uses less digits than its factorization.

131001027771 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1562282.

The product of its (nonzero) digits is 2058, while the sum is 30.

The spelling of 131001027771 in words is "one hundred thirty-one billion, one million, twenty-seven thousand, seven hundred seventy-one".

Divisors: 1 3 73 219 383 1149 27959 83877 1561823 4685469 114013079 342039237 598178209 1794534627 43667009257 131001027771