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BaseRepresentation
bin10111111011010…
…101011110011111
31000222100210000202
4113323111132133
51310231233211
6103500014115
712643050053
oct2773253637
91028323022
10401430431
11196662696
12b253133b
13652226cc
143b457c63
152539753b
hex17ed579f

401430431 has 16 divisors (see below), whose sum is σ = 433741824. Its totient is φ = 370586304.

The previous prime is 401430397. The next prime is 401430451. The reversal of 401430431 is 134034104.

It is a happy number.

It is not a de Polignac number, because 401430431 - 210 = 401429407 is a prime.

It is a super-2 number, since 2×4014304312 = 322292781865691522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401430451) 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, 76370 + ... + 81456.

It is an arithmetic number, because the mean of its divisors is an integer number (27108864).

Almost surely, 2401430431 is an apocalyptic number.

401430431 is a deficient number, since it is larger than the sum of its proper divisors (32311393).

401430431 is a wasteful number, since it uses less digits than its factorization.

401430431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5230.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 401430431 is about 20035.7288612119. The cubic root of 401430431 is about 737.6835469996.

Adding to 401430431 its reverse (134034104), we get a palindrome (535464535).

The spelling of 401430431 in words is "four hundred one million, four hundred thirty thousand, four hundred thirty-one".