Search a number
-
+
31044201405 = 3571493895101
BaseRepresentation
bin11100111010011000…
…001110101110111101
32222010112010211102020
4130322120032232331
51002034303421110
622132252550353
72146206233550
oct347230165675
988115124366
1031044201405
1112190707aa8
1260247823b9
132c0980a259
141706dc0697
15c1a63bd70
hex73a60ebbd

31044201405 has 64 divisors (see below), whose sum is σ = 57305664000. Its totient is φ = 14057395200.

The previous prime is 31044201389. The next prime is 31044201469. The reversal of 31044201405 is 50410244013.

It is not a de Polignac number, because 31044201405 - 24 = 31044201389 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 6083355 + ... + 6088455.

It is an arithmetic number, because the mean of its divisors is an integer number (895401000).

Almost surely, 231044201405 is an apocalyptic number.

31044201405 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

31044201405 is a deficient number, since it is larger than the sum of its proper divisors (26261462595).

31044201405 is a wasteful number, since it uses less digits than its factorization.

31044201405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5654.

The product of its (nonzero) digits is 1920, while the sum is 24.

Adding to 31044201405 its reverse (50410244013), we get a palindrome (81454445418).

The spelling of 31044201405 in words is "thirty-one billion, forty-four million, two hundred one thousand, four hundred five".

Divisors: 1 3 5 7 15 21 35 105 149 389 447 745 1043 1167 1945 2235 2723 3129 5101 5215 5835 8169 13615 15303 15645 25505 35707 40845 57961 76515 107121 173883 178535 289805 405727 535605 760049 869415 1217181 1984289 2028635 2280147 3800245 5320343 5952867 6085905 9921445 11400735 13890023 15961029 26601715 29764335 41670069 69450115 79805145 208350345 295659061 886977183 1478295305 2069613427 4434885915 6208840281 10348067135 31044201405