Search a number
-
+
131512742207 = 7112155268881
BaseRepresentation
bin111101001111011000…
…1010011000100111111
3110120110100102111210222
41322132301103010333
54123314230222312
6140225514251555
712334002602330
oct1723661230477
9416410374728
10131512742207
1150857572800
12215a3426bbb
13c52b408872
146518368287
15364aa78672
hex1e9ec5313f

131512742207 has 12 divisors (see below), whose sum is σ = 165206090448. Its totient is φ = 102477460800.

The previous prime is 131512742189. The next prime is 131512742209. The reversal of 131512742207 is 702247215131.

It is not a de Polignac number, because 131512742207 - 224 = 131495964991 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131512742209) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 77633594 + ... + 77635287.

It is an arithmetic number, because the mean of its divisors is an integer number (13767174204).

Almost surely, 2131512742207 is an apocalyptic number.

131512742207 is a deficient number, since it is larger than the sum of its proper divisors (33693348241).

131512742207 is a wasteful number, since it uses less digits than its factorization.

131512742207 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155268910 (or 155268899 counting only the distinct ones).

The product of its (nonzero) digits is 23520, while the sum is 35.

Adding to 131512742207 its reverse (702247215131), we get a palindrome (833759957338).

The spelling of 131512742207 in words is "one hundred thirty-one billion, five hundred twelve million, seven hundred forty-two thousand, two hundred seven".

Divisors: 1 7 11 77 121 847 155268881 1086882167 1707957691 11955703837 18787534601 131512742207