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31541024141 = 112260669621
BaseRepresentation
bin11101010111111111…
…011101010110001101
310000102011000001002022
4131113333131112031
51004044000233031
622253441335525
72164421165414
oct352777352615
9100364001068
1031541024141
11124160a4300
1261430375a5
132c8871c0c3
141752d8a47b
15c4907897b
hex757fdd58d

31541024141 has 6 divisors (see below), whose sum is σ = 34669059726. Its totient is φ = 28673658200.

The previous prime is 31541024131. The next prime is 31541024147. The reversal of 31541024141 is 14142014513.

It can be written as a sum of positive squares in only one way, i.e., 16172463241 + 15368560900 = 127171^2 + 123970^2 .

It is not a de Polignac number, because 31541024141 - 26 = 31541024077 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 31541024141.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31541024147) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 130334690 + ... + 130334931.

It is an arithmetic number, because the mean of its divisors is an integer number (5778176621).

Almost surely, 231541024141 is an apocalyptic number.

It is an amenable number.

31541024141 is a deficient number, since it is larger than the sum of its proper divisors (3128035585).

31541024141 is a wasteful number, since it uses less digits than its factorization.

31541024141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 260669643 (or 260669632 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 26.

Adding to 31541024141 its reverse (14142014513), we get a palindrome (45683038654).

The spelling of 31541024141 in words is "thirty-one billion, five hundred forty-one million, twenty-four thousand, one hundred forty-one".

Divisors: 1 11 121 260669621 2867365831 31541024141