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1403061221 = 17131630023
BaseRepresentation
bin101001110100001…
…0000001111100101
310121210002220011102
41103220100033211
510333140424341
6351120245445
746524552332
oct12350201745
93553086142
101403061221
1165aa9a731
12331a70885
131948b0c53
14d44ab989
158329bc9b
hex53a103e5

1403061221 has 8 divisors (see below), whose sum is σ = 1496937024. Its totient is φ = 1310445760.

The previous prime is 1403061217. The next prime is 1403061259. The reversal of 1403061221 is 1221603041.

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 1403061221 - 22 = 1403061217 is a prime.

It is a super-3 number, since 3×14030612213 (a number of 28 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1403061193 and 1403061202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1403061281) 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, 312785 + ... + 317238.

It is an arithmetic number, because the mean of its divisors is an integer number (187117128).

Almost surely, 21403061221 is an apocalyptic number.

It is an amenable number.

1403061221 is a deficient number, since it is larger than the sum of its proper divisors (93875803).

1403061221 is a wasteful number, since it uses less digits than its factorization.

1403061221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 630171.

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

The square root of 1403061221 is about 37457.4588166362. The cubic root of 1403061221 is about 1119.5037185295.

Adding to 1403061221 its reverse (1221603041), we get a palindrome (2624664262).

The spelling of 1403061221 in words is "one billion, four hundred three million, sixty-one thousand, two hundred twenty-one".

Divisors: 1 17 131 2227 630023 10710391 82533013 1403061221