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1231003982 = 21390752201
BaseRepresentation
bin100100101011111…
…1010000101001110
310011210100111000002
41021113322011032
510010114111412
6322052404302
742335234615
oct11127720516
93153314002
101231003982
1158196256a
122a4316692
1316805b430
14b96c087c
1573111dc2
hex495fa14e

1231003982 has 16 divisors (see below), whose sum is σ = 1990775472. Its totient is φ = 567518400.

The previous prime is 1231003981. The next prime is 1231004003. The reversal of 1231003982 is 2893001321.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1231003981) 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, 2519 + ... + 49682.

It is an arithmetic number, because the mean of its divisors is an integer number (124423467).

Almost surely, 21231003982 is an apocalyptic number.

1231003982 is a deficient number, since it is larger than the sum of its proper divisors (759771490).

1231003982 is a wasteful number, since it uses less digits than its factorization.

1231003982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53123.

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 1231003982 is about 35085.6663325638. Note that the first 3 decimals coincide. The cubic root of 1231003982 is about 1071.7327101246.

The spelling of 1231003982 in words is "one billion, two hundred thirty-one million, three thousand, nine hundred eighty-two".

Divisors: 1 2 13 26 907 1814 11791 23582 52201 104402 678613 1357226 47346307 94692614 615501991 1231003982