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31062111340 = 225131723615009
BaseRepresentation
bin11100111011011100…
…100011010001101100
32222011202211202020011
4130323130203101230
51002103400030330
622134132503004
72146514406241
oct347334432154
988152752204
1031062111340
111219a82aaa7
12602a77aa64
132c1043b250
1417095235c8
15c1bec882a
hex73b72346c

31062111340 has 192 divisors, whose sum is σ = 78902449920. Its totient is φ = 10153820160.

The previous prime is 31062111299. The next prime is 31062111341. The reversal of 31062111340 is 4311126013.

It is not an unprimeable number, because it can be changed into a prime (31062111341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 6198756 + ... + 6203764.

It is an arithmetic number, because the mean of its divisors is an integer number (410950260).

Almost surely, 231062111340 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31062111340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39451224960).

31062111340 is an abundant number, since it is smaller than the sum of its proper divisors (47840338580).

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

31062111340 is a wasteful number, since it uses less digits than its factorization.

31062111340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5132 (or 5130 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 31062111340 its reverse (4311126013), we get a palindrome (35373237353).

The spelling of 31062111340 in words is "thirty-one billion, sixty-two million, one hundred eleven thousand, three hundred forty".