Search a number
-
+
31415152506 = 2343121764157
BaseRepresentation
bin11101010000011111…
…010010111101111010
310000002101011002122220
4131100133102331322
51003314234340011
622233143424510
72161332250623
oct352037227572
9100071132586
1031415152506
1112361042061
126108a55136
132c6861a74a
141740382a4a
15c3ceb3506
hex7507d2f7a

31415152506 has 16 divisors (see below), whose sum is σ = 64291475424. Its totient is φ = 10228189104.

The previous prime is 31415152493. The next prime is 31415152507. The reversal of 31415152506 is 60525151413.

It is not an unprimeable number, because it can be changed into a prime (31415152507) 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, 60881821 + ... + 60882336.

It is an arithmetic number, because the mean of its divisors is an integer number (4018217214).

Almost surely, 231415152506 is an apocalyptic number.

31415152506 is an abundant number, since it is smaller than the sum of its proper divisors (32876322918).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31415152506 is a wasteful number, since it uses less digits than its factorization.

31415152506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121764205.

The product of its (nonzero) digits is 18000, while the sum is 33.

It can be divided in two parts, 31415 and 152506, that added together give a triangular number (183921 = T606).

The spelling of 31415152506 in words is "thirty-one billion, four hundred fifteen million, one hundred fifty-two thousand, five hundred six".

Divisors: 1 2 3 6 43 86 129 258 121764157 243528314 365292471 730584942 5235858751 10471717502 15707576253 31415152506