Search a number
1030102309 = 1924636163
BaseRepresentation
bin111101011001100…
…001110100100101
32122210022121201101
4331121201310211
54102201233214
6250114400101
734345503505
oct7531416445
92583277641
101030102309
11489514125
12248b90031
131355498c2
149ab45a05
156067a774
hex3d661d25

1030102309 has 12 divisors (see below), whose sum is σ = 1089696576. Its totient is φ = 973620648.

The previous prime is 1030102273. The next prime is 1030102319. The reversal of 1030102309 is 9032010301.

It is not a de Polignac number, because 1030102309 - 217 = 1029971237 is a prime.

It is a super-2 number, since 2×10301023092 = 2122221534014262962, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1030102319) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 164062 + ... + 170224.

It is an arithmetic number, because the mean of its divisors is an integer number (90808048).

Almost surely, 21030102309 is an apocalyptic number.

1030102309 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

1030102309 is a deficient number, since it is larger than the sum of its proper divisors (59594267).

1030102309 is an equidigital number, since it uses as much as digits as its factorization.

1030102309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6664 (or 6645 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 19.

The square root of 1030102309 is about 32095.2069474556. The cubic root of 1030102309 is about 1009.9350704919.

The spelling of 1030102309 in words is "one billion, thirty million, one hundred two thousand, three hundred nine".