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1230311401 = 111016191789
BaseRepresentation
bin100100101010101…
…0000111111101001
310011202001021221221
41021111100333221
510004424431101
6322025502041
742326321464
oct11125207751
93152037857
101230311401
1158152a190
122a4041921
13167b78117
14b95802db
1573026aa1
hex49550fe9

1230311401 has 16 divisors (see below), whose sum is σ = 1358395200. Its totient is φ = 1104984000.

The previous prime is 1230311387. The next prime is 1230311441. The reversal of 1230311401 is 1041130321.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-1230311401 is a prime.

It is a super-2 number, since 2×12303114012 = 3027332286861165602, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1230311441) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 686815 + ... + 688603.

It is an arithmetic number, because the mean of its divisors is an integer number (84899700).

Almost surely, 21230311401 is an apocalyptic number.

1230311401 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1230311401 is a deficient number, since it is larger than the sum of its proper divisors (128083799).

1230311401 is a wasteful number, since it uses less digits than its factorization.

1230311401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2520.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 1230311401 is about 35075.7950872108. The cubic root of 1230311401 is about 1071.5316815417.

Adding to 1230311401 its reverse (1041130321), we get a palindrome (2271441722).

The spelling of 1230311401 in words is "one billion, two hundred thirty million, three hundred eleven thousand, four hundred one".

Divisors: 1 11 101 619 1111 1789 6809 19679 62519 180689 687709 1107391 1987579 12181301 111846491 1230311401