Base | Representation |
---|---|
bin | 11101010001011101… |
… | …010010011001011100 |
3 | 10000010111201201021202 |
4 | 131101131102121130 |
5 | 1003332414344400 |
6 | 22234524015032 |
7 | 2161620342506 |
oct | 352135223134 |
9 | 100114651252 |
10 | 31431403100 |
11 | 1236a2313a9 |
12 | 6112391478 |
13 | 2c6baba396 |
14 | 17425b2d76 |
15 | c3e6234d5 |
hex | 75175265c |
31431403100 has 72 divisors (see below), whose sum is σ = 68888976240. Its totient is φ = 12447198720.
The previous prime is 31431403063. The next prime is 31431403121. The reversal of 31431403100 is 130413413.
It is a super-2 number, since 2×314314031002 (a number of 22 digits) contains 22 as substring.
It is a Harshad number since it is a multiple of its sum of digits (20).
It is a congruent number.
It is an unprimeable number.
It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5436011 + ... + 5441789.
Almost surely, 231431403100 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 31431403100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34444488120).
31431403100 is an abundant number, since it is smaller than the sum of its proper divisors (37457573140).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
31431403100 is a wasteful number, since it uses less digits than its factorization.
31431403100 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 6327 (or 6320 counting only the distinct ones).
The product of its (nonzero) digits is 432, while the sum is 20.
Adding to 31431403100 its reverse (130413413), we get a palindrome (31561816513).
The spelling of 31431403100 in words is "thirty-one billion, four hundred thirty-one million, four hundred three thousand, one hundred".
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