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31222124413 = 269311373207
BaseRepresentation
bin11101000100111110…
…111100111101111101
32222120220221020220021
4131010332330331331
51002420330440123
622202050252141
72153466451534
oct350476747575
988526836807
1031222124413
1112272091207
126074287051
132c3763493c
14172289731b
15c2b084c5d
hex744fbcf7d

31222124413 has 8 divisors (see below), whose sum is σ = 31439041920. Its totient is φ = 31005954480.

The previous prime is 31222124399. The next prime is 31222124441. The reversal of 31222124413 is 31442122213.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 31222124413 - 225 = 31188569981 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31222124473) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 102945 + ... + 270262.

It is an arithmetic number, because the mean of its divisors is an integer number (3929880240).

Almost surely, 231222124413 is an apocalyptic number.

It is an amenable number.

31222124413 is a deficient number, since it is larger than the sum of its proper divisors (216917507).

31222124413 is a wasteful number, since it uses less digits than its factorization.

31222124413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 373787.

The product of its digits is 2304, while the sum is 25.

Adding to 31222124413 its reverse (31442122213), we get a palindrome (62664246626).

The spelling of 31222124413 in words is "thirty-one billion, two hundred twenty-two million, one hundred twenty-four thousand, four hundred thirteen".

Divisors: 1 269 311 83659 373207 100392683 116067377 31222124413