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31401134210 = 257069444209
BaseRepresentation
bin11101001111101001…
…110100100010000010
310000001101202220011202
4131033221310202002
51003302142243320
622231523141202
72161102144145
oct351751644202
9100041686152
1031401134210
1112354137996
126104214802
132c6574cbb4
14173c57405c
15c3bb44b75
hex74fa74882

31401134210 has 16 divisors (see below), whose sum is σ = 56530164600. Its totient is φ = 12558648576.

The previous prime is 31401134209. The next prime is 31401134221. The reversal of 31401134210 is 1243110413.

It can be written as a sum of positive squares in 4 ways, for example, as 26870094241 + 4531039969 = 163921^2 + 67313^2 .

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 151415 + ... + 292794.

Almost surely, 231401134210 is an apocalyptic number.

31401134210 is a deficient number, since it is larger than the sum of its proper divisors (25129030390).

31401134210 is a wasteful number, since it uses less digits than its factorization.

31401134210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 451285.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 31401134210 its reverse (1243110413), we get a palindrome (32644244623).

The spelling of 31401134210 in words is "thirty-one billion, four hundred one million, one hundred thirty-four thousand, two hundred ten".

Divisors: 1 2 5 10 7069 14138 35345 70690 444209 888418 2221045 4442090 3140113421 6280226842 15700567105 31401134210