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31430112141 = 3411213210659
BaseRepresentation
bin11101010001011000…
…010111001110001101
310000010102022010102110
4131101120113032031
51003332102042031
622234440214233
72161603355001
oct352130271615
9100112263373
1031430112141
111236952a49a
126111a6a379
132c6b7578bc
141742358701
15c3e46ac46
hex75161738d

31430112141 has 16 divisors (see below), whose sum is σ = 42964528320. Its totient is φ = 20425399680.

The previous prime is 31430112139. The next prime is 31430112143. The reversal of 31430112141 is 14121103413.

It is an interprime number because it is at equal distance from previous prime (31430112139) and next prime (31430112143).

It is not a de Polignac number, because 31430112141 - 21 = 31430112139 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31430112143) 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, 43870 + ... + 254528.

It is an arithmetic number, because the mean of its divisors is an integer number (2685283020).

Almost surely, 231430112141 is an apocalyptic number.

It is an amenable number.

31430112141 is a deficient number, since it is larger than the sum of its proper divisors (11534416179).

31430112141 is a wasteful number, since it uses less digits than its factorization.

31430112141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211916.

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 31430112141 its reverse (14121103413), we get a palindrome (45551215554).

The spelling of 31430112141 in words is "thirty-one billion, four hundred thirty million, one hundred twelve thousand, one hundred forty-one".

Divisors: 1 3 41 123 1213 3639 49733 149199 210659 631977 8637019 25911057 255529367 766588101 10476704047 31430112141